anyone on here have an under active thyroid and trying to lose weight?

for years I had hyper thyroid but went through treatment and now have hypo. before and during the treatment through exercise and healthy eating I lost 20 pounds. but few months after treatment I became hypo. wasn't gaining weight but wasn't losing anymore. then I got pregnant. misscaried at 7 weeks and during it I gained 15 pounds. had to have surgery for a dermoid removal and was bed ridden for couple months and gained another 10 pounds. it's been hard because I couldn't work out. now it's almost going to be a year since the surgery and I still have pain been getting sick often because of the hypothyroidism/weaken immune system which makes it difficult to workout and I've only lost 10 pounds but went on vacation and dunno how I gained 5 pounds back. so I'm 15 pounds away from going back to my weight before the pregnancy. am I the only one having trouble losing weight and being hypo? anyone else out there want to be losing weight buddies with hypothyroidism? ☺