Im so sorry if this isn’t what this is used for but I need help.

I had unprotected sex for the first time on thursday while on my period. There was no ejaculation before or during it (it was short lived because I stopped it due to getting scared)

I went down a rabbit hole of reading things online about people getting pregnant due to precum and i’m terrified.

I personally don’t want to take an emergency contraceptive because I can barely afford it and I don’t know what it will do to me or if the window has passed to use it.

I’m so scared please any advice or opinons are wanted