Not telling him I'm pregnant....YET

I need some advice ladies. Janurary 2019 I had a miscarriage, my due date was October and that's when I found out I was pregnant with my son.i heard his first heartbeat. After 25 hours of labor with my son & a C-Section later me and my Fiancee both agreed we won't do this AGAIN lol but I'm SCARED NOW because I found out today I'm pregnant 9 DPO and if I tell him he would want for me to get an abortion because I'm still early. He doesn't agree with abortion if there's a heartbeat & if the baby is well developed (1-2 months & on). I wanted to wait until I was 12 weeks to let him know I'm pregnant so he wouldn't bring up abortion but yet this is my body and I will keep my child, I just do not know when tell him & I hot pregnant August 28 2019 with my son & he was born May 8,2020 NOW IM PREGNANT AUGUST 13 2021 & DUE (ESTIMATED) MAY 4, 2022 help 😭😭😭😭😭