Plan B & withdrawal..

My bf withdrew 7:30 Wednesday night. I took plan B the next day at 6:55am. I just stoped taking my BC on June 10. This happened on June 20. I had my withdrawal bleed June 12-15. I also only have one tube and one ovary from a surgery in November... I was on BC ever since that surgery. so idk if that side is working at all. I know there’s a chance of pregnancy... but I think its pretty low right? When should I test? Btw I stopped mid pack on my birth control. Pls don’t lecture me on the withdrawal. This has only happened once in seven years.