What do I do?😒 In laws coming to me behind my partners back..

So I’ve been really worried about announcing the fact I’m pregnant with our second baby to family and friends as I don’t feel I’d have via her positive reactions.. we had our first back in November and our second is due this October and I understand it’s really soon and I should’ve probably got contraception until the time was right but things happen.. I’m not the first to be in this situation and I’m sure I won’t be the last, my partner was really excited and wanted to tell his family straight away and I said that’s fine, I just want to wait until I’m ready to tell my side of the family, so we told his dad and stepmum first, and obviously we had the reactions I was expecting like being told we’re stupid, and it’s too soon, his stepmum lectured me about contraception but later followed up with a congratulations.. we told more of his family and some people congratulated us, others said we were mad, and one told me to close my legs.. A few weeks later his dad showed up to our without warning while my partner was in work and said “if you think it’s the wrong decision you can always go and get an abortion behind his back and tell him you lost it” and I was just stunned.. like who is he to suggest I went down that route? Fair enough tell me he supports whatever decision I make but it was the fact he told me I could go behind his back and lie about it and whatever.. so I’m getting closer to my 20 weeks scan and my partners asking me when I’m going to break the news to my family and I said “when I’m ready” and he’s questioning why I’m so scared of what people think etc and he got abit pissy about it, and I explained “because we’ve already had bad reactions from your family, like you don’t know what your dads said to me about it” and I probably shouldn’t have turned around and said that but I’m just trying to explain I’m waiting until the times right and I feel comfortable confronting them due to being put off by others” but obviously now he’s asking what his dad has said to me.. I dunno what to do because we tell eachother everything, I never keep anything from him but, do I tell him what his dads said? But then again I don’t want to cause any arguments between him and his family, nor do I want to upset him? I don’t want him to feel betrayed by his dad but I feel like he has the right to know what’s been said behind his back? Im so stuck I feel awful😭