Please help 😩😩

I am 12 weeks pregnant this week ,I've bin with my partner nearly 3 years ,I've got a 10 year old son and my partner has a 15-year-old son ,I have not been able to fall pregnant since my son and had kind give up hope , when I met my current partner , he is 10 years older now and at first told me if he was with someone a few years he would want more children but as times gone on here now said that I never wanted one , I kind of expected that because I had given up hope that I will be able to conceive naturally anyway ,then A massive surprise seven weeks ago that I found out I was pregnant Obviously lots of mixed emotions and excitement shock , but I knew one thing I wasn't going to be pressured into abortion I have been completely honest with him he knew I wasn't on any contraception , but he really wasn't happy about it , now he's blowing hot and cold with me , One day kissing my belly before work and picking names out with me the next day saying he never wanted to have a baby and he's not happy about it , i've had a really bad morning sickness to the point I've been hospital so I had to be put on a drip ,and on the bad days he's just screaming at me all day putting me down telling me how I am lazy and I need to get up and start doing things how he should be coming home for his tea cooked every night not me sat in bed feeling sorry for myself ,really don't know what to do and where I stand yesterday he was screaming at me all day long so you need them on the Baby and even still trying to mention have an abortion but the day before making me baby shopping and buying clothes ,Please help someone I feel so alone and upset all the time I don't really wanna tell my friends and family because I don't want them to think bad of him because everyone is so excited please please help