Precum-Concerned!!!

Ok So i had sex with my boyfriend like 3 days ago(28 june). we did it with a condom 2 times and then we did it unprotected another 2 times.

I’m scared of the precum, Even if he cleaned himself down there i think there Could also be a chance for the sperm to remain inside the penis(i guess??) (sorry for my english).. because he didn’t urinate.

I took plan b 4 months ago and my cycle has Been a disaster. The gap between my last cycle was of 2 weeks and 6 days. When we Did it it was the 7th day and i was still bleeding a Little bit.

So eve says that the fertile window should start in 1 july(today) and as i know i think that the sperm survives maximum 5 days in the vagina So i got scared and after aproximatively 14-15 hours after the incident i took plan B.

Should i be concerned? Am i paranoid? I’m never Gonna have unprotected sex again!! It was my mistake and now i’m overthinking all day and night...