Hairthinning happens sometimes with weightloss because of nutrition deficancy's...Prehaps get your levels checked out by a doctor or start taking a multivitamin(which is what I did)...
And I agree with Cattails about getting checked for PCOS...getting your hormones in check would pretty much solve most of those problems if it is PCOS
I'm not sure about clothes, since I'm 6 feet talll, but have you tried stores like lane bryant and fashionbug? Even goodwill if your strapped for cash usually has a few nice pieces in every size
I'm sorry your feeling like this
Wish I could suggest more....