In remission and just found out I’m pregnant..

I’m currently 7w1d, also I’m in remission from stage 3 breast cancer. Currently just got done and all clear in May from my drs. I completely did not think I could get pregnant after chemo and radiation. But here we are. I haven’t told anyone besides my bf about my pregnancy. There a few people in my family who have told me I shouldn’t have any more children. We have 3 beautiful children already. But this baby is unexpected and I’m happy to be fortunate enough to even get pregnant. I really don’t know how I will tell my family. Im scared to say anything and I don’t know why. I’m 32 and afraid to tell my family. Is that weird of me?!?! I mean my Oncologist and OB said it’s fine and we just need to keep a close eye on me and baby. But since I’ve been done with chemo and radiation for a while I’m 100% fine to have a baby. Please if anyone can give me advice o would appreciate it.