Anyone gotten pregnant right after having a baby??

1st time having sex since baby & I’ve been so used to not needing a condom I didn’t even think & I realized later that we didn’t I guess he realized but never said anything…. It was missionary & cowgirl but he never finished I know I’m being paranoid my health problems have just been really bad lately….

I’m scared of another pregnancy especially right now!! Should I even be worried or let it be??

I have PCOS & im breastfeeding so I have no idea when to test… my husband said wait until my estimated period is 1 & 1/2 months late I figured I’ll stick with that cuz idk… estimated period on the app is 31st.

Advice?? Suggestions?? Plz no hate I have heart issues & we don’t know if it’s healthy for me to have a baby cuz we don’t know how severe they are I have an mri scheduled in a couple months…