Jf symptoms and conditions

Hi,
I am 50 years old. I was diagnosed with as hypo at age 39. My doctor prescribed Synthroid at 25mcg and I have (proudly-ha!) worked my way up to 125mcg. I was always one of the "lucky ones" who could eat any and everything and my weight stayed the same. I am a busy mom of two and a first grade teacher, so the 33 lbs. I have gained since age 39 has not been due to diet changes or sitting around with a bag of chips in front of a TV all day. I also questioned my doctor about this and he just brushed it off. Well, I am tired of not feeling good about myself. My life is in good order except for my weight. I want someone to take this seriously. Should I see a specialist rather than my regular internist?
Wow! I think I just lost a little weight telling you great people about this!
jf