need advice on maintaining

I've been a CC member for almost 2 years.  I have lost nearly 30 lbs from 130 lbs, which doesn't sound like a lot, but I'm only 5' 0" tall and I'm 51 years old.  I've been trying to maintain for about 6 months now.  I am steadily gaining. I went from 102 lb, my lowest, to 108 lb.  I've pretty much stayed the same in my clothes, believe it or not.  My question is, should I just wait and see where my weight stops on its own or start restricting calories again.  I've been staying right around 1500-1550 calories per day.  My ratios are almost always 50carbs, 25 proteins, 25 fats, plenty of fiber (25-35), low saturated fats, because of my cholesteral, and lots of calcium.  I exercise 5 days per week, for an hour to hour and a half, cardio and some weights.  I use a Polar heart rate monitor and it says I burn any where from 250kcals to 450kcals per workout, depending on how hard I push myself.  My scale just seems to be going up, not up and down, just up.  I used the tape measure and it pretty much has stayed the same give or take 1/4-1/2 inch.  If it was just water weight wouldn't it go down sometime and not keep going up? Phord calculator says I should eat around 1700 calories per day, but that seems high.  Any opinions would be helpful.  Thanks. 

My opinions:

1. Definitely DON'T go below 1500 calories.  In fact, don't go below 1550.  You exercise, you are "staying in your same clothes," and the tape measure has "pretty much stayed the same."  You seem darn healthy to me.
2. Perhaps you might examine your breakfast and see if you are getting a good protein jump start to your metabolic engine.  It could be that your body fell into operating on fewer calories when you first got on the 1500-1550 calorie diet.  It could very well be that if you can convince your body to burn more calories to run efficiency, you could consume 1700 calories AND NOT GAIN.  I recommend that you drink a glass of water to start the day and eat a healthy higher protein breakfast.
3. Also, I don't know your meal set up--but I recommend 5 smaller meals throughout the day, after consuming a good, healthy breakfast.
4. It's difficult to know how accurate calorie burn calculators are.  I think Polar is fairly accurate, however, based on what I have read.
5. Try weighing every day, at the same time, probably first thing in morning--preferably after a BM, but definitely before eating breakfast. 
6. I wonder if you have gained some muscle from your workouts.  Maybe that is part of your weight gain.  Also, on the other hand, since while we sleep at night, our bodies burn more calories to rebuild muscle, that is something to think about.
7. Maybe 108 SHOULD BE your healthiest weight?  Maybe 102 is too low?

Best of luck.  I think you are very healthy.  Be patient.   Wait it out and see if the weight doesn't plateau soon.  Also, again, I think if you get your metabolism going correctly, you could take in 1700+ calories and not gain weight.

Well I agree with phord...you should be able to eat more but often times dieting leads to a stalled metabolism.so I would say that you should just keep your calories at least the same or increase them a bit and let your weight stabilize.

Thank you Pilgrimdude and Chrissy1988 for your fast reply.  I do eat a very high protein breakfast every morning, either egg whites and canadian bacon or milk smoothie with extra protein powder or both.  I don't usually start the day off with water but I have some after eating and I always have a cup next to me throuout the day.  I do weigh myself every morning whether I like it or not.  I do wait for awhile before eating, though, because I get up at 5:30 to get my kids off to school and I don't feel like eating yet.  I then go back to bed after they leave at 6:30 and sleep until 8:00.  Then I get up and weigh myself and start my day off with a healthy breakfast.  I also eat small meals or snacks all day long. I still count and weigh everything except my vitamins. I do feel like some of my weight is muscle, but that much?  I don't know if it's better to start eating at 5:30 and then go back to bed, or continue to wait until later like I have been doing. I just don't want to go back to square one.  

It seems to me that you are "on top of things."  I understand your concern.  Actually, I think you know more about this maintenance stuff than I do.  So I really can't offer much help.  I am going to make an optimistic prediction, though, and state that I think you will find the weight gaining will stop.  If not, you could study more carefully the foods you eat, when you eat them, and if you are actually burning as many calories in exercising as you think you are.  I absolutely don't think you should even consider going below 1500 calories.  From everything I have read on line and been told by health-wellness experts, a woman when losing weight should not drop below 1500 and a man should not drop below 1800, with some exceptions, that are monitored by health experts.