Morning after pill

I'm probably gonna have to take the morning after pill... I'm not sure if he came in me, though. He came on me then fingered me (but I think he had cum on his hand), so I'm sure cum got in me somehow.

Just wondering if it's worth getting the pill since I'm not in my fertile window yet-- it starts tomorrow.

What do you think? I'm also scared to get the pill cause I heard it does weird things to your period or doesn't even work sometimes!!!

Any advice will help... thanks!