Feel somewhat lost... is something wrong or is it just in my head?

I would like to think I have pretty good self esteem. I know im a bigger girl (5'2" 200lbs) but i dont really think about it a lot or let it stop me in my day to day. My husband is a very blunt man. He worrys about health issues and I have been stuggling to lose my weight. I get extreem exhaustion around my period i can hardly get up the stairs without my body feeling weak and like i want to fall asleep to recharge. i get extreem hunger if i even try to change my eating habits. Almost like my body thinks im starving myself but i know im not but i get severe hunger that i cant ignore. I am eating more fruits and veggies but if i change my portion size even a little i get that way within a week.

My self esteem doesnt stop me and most days im rearing to go. Its just around my period when i get messed up (except for eating habit) and it can be from a week to three weeks long... up to three months long around my periods.

Went to my gyno and they did blood tests everything came back normal including my thyroid test. Im not ovulating tho. I am able to but I wasnt that month I went to the gyno.

My mom has thyroid issues but apparently thats not it.

Has anyone heard of something similar or have any ideas of what this might be or is it all in my head. Im not finding any answers anywhere else.