Self image issues

Kassie

So in the last couple of months since June until now I’ve gained about 15-20 pounds and I have no idea why exactly I’m a college student and this is my first semester from home but I am a junior in college. I currently work two jobs I am a full time student and I walk my dog two to three times a day and I walk to school to and from school almost everyday and I live in Texas and I just kinda figured I’d start shedding off this weight but I’m losing nothing and my sister has dropped 20 pounds since we moved in and all I’ve done is cry and body shame myself so I try my hardest to hide my body under my clothes and try to prevent from showing any belly or leg skin. I have no idea what to do plus I just started the same birth control as my sister I use to do the patch but both seem to make my gain weight, I’m 6ft and I weigh 234.6 pounds and I people say I don’t look it but I do I just have no clue what’s going on with me and I just could possibly use advice, please ! P.s my sex drive has been fluctuating severely lately I use to be super into it like every day now I want nothing hardly.