Accidentally pregnant twice in a row

I feel like I’m going to get so much judgement if it got out and look really bad on me, I’m 18 and was on birth control when I fell pregnant, then I had a chemical pregnancy and my boyfriends sister knew about it and when he told her she freaked out saying we’re stupid and I did it on purpose because I wanted to get married and all that bs so she was happy when we lost it well I got back on birth control when it was confirmed pregnancy was over by doctors but I already knew and fast forward that cycle I got really badly ill and was in the hospital for a day and some time and all the antibiotics caused my birth control to fail.... and I found out I was pregnant again and I’m so scared for the sister to find out and my “friend” that knew about the chemical I feel like everyone is going to think I got pregnant on purpose and that I’m a shitty person I was planning on getting the bar within the next couple months I love my baby and now I’m really happy I feel like it all happened for a reason im just scared of others opinions