please help...I hate myself

I've always had self esteem issues...I look in the mirror and hate everything I see, it makes me cry and I try to avoid my reflection a lot. I see fat and ugly and someone unlovable and stupid...this was pounded into my head by my mother before I was taken away from her for child abuse. It's been awhile but I still feel the same, and for a bit I thought I was better. I met my SO, stopped self harm, and felt pretty when he told me I am. I found out I'm pregnant, and it's been creeping back up on me. Now I'm in my third trimester and I feel like I'm getting fat all over my body and it's never gunna go away and I see someone ugly...I compare myself to every girl and feel like I'm the ugliest one. I want to make it clear that I love this baby with all my heart and my SO is very supportive. I just want to fix this because I'm tired of crying and I want to make myself better for my child. I was in therapy for five years and it didn't help with it...advice? Please?