Don't know what to call this is just kind of need some advice

Im posting anonymously only because Im really shy. But Im 7 weeks pregnant today and lately I have been feeling like I dont want to be with my unborn babys father. Every little thing he does annoys me and aggravates me. I dont know what to do I dont wanna kiss him or be near him or anything. Maybe its the hormones or something but im not really feeling this relationship. And ive been thinking about my ex alot lately we havent talked in months but our dream was to have a kid together and now it by someone else. I feel so worthless and horrible and I really want to talk to my ex but I know he mad at me. I dont know what to do. Im losing it and I dont wanna stress and lose my baby.

Sorry for making this a little long but I really need some positivity right now.