does this sound like underactive thyroid?

Nearly 4 years ago i had my 2nd daughter. I lost 2 stone in 6 weeks straight after birth and a total of 3stone by the time she was 12 weeks old. I was dead happy about this esp as I hadn't been dieting etc. A thyroid test at 8 weeks post birth indicated borderline hyperthyroid but it returned to normal after a couple of weeks.

When my daughter was 1 I went onto the pill and put on 5lbs in 4 weeks. Needless to say I can straight off it but ever since I have piled on the weight.

I am now 2 stone heavier, cannot shift any weight, my once regular 2-day periods are prolonged and 'patchy', I vary between falling asleep at 6pm or insomnia until 2am, my concentration and libido are crap and I cannot stand a draft of wind or 'fresh air' as it is too cold!

I went to GP but she was awful and basically accused me of being depressed - which is totally not me. I told her the only reason i was low in mood at times is cause I am fat and have no clothes that fit!

Anyway she agreed to test me and i will get result on monday.

Has anyone else had these symptoms and what did they turn out to be?

PS my gran and mum's twin both had hypothyroidism.