Can't accept pregnancy

This is my second baby and I am 25 weeks along. My little one (boy) is turning 4 in a few weeks. 
I can't seem to acknowledge to this day that I am pregnant. I feel fat, not pregnant. I stopped working out daily for the past two weeks. I want to hide and not have anyone see me. I am very self conscious and it's so sad. I have gained 30lbs and yet I don't really look 6 months pregnant. 
I thought maybe buying girl clothes would excite me, but it hasn't. 
Anyone else sharing these feelings? 
I hope I'm not alone