Baby weight

Ive lost 30 lbs since i had my baby which was less than a month ago. Idk if thats a good thing. I think i may have post pardom depression or anxiety. I dont ever have a appetite im always feeling sad and crying. Ive been getting angry easily and getting physical when im angry. I dont feel attractive to my fiancé. Ive found him on dating websites and texting other females. When i hust had my baby