He cummed on me.

Kate
He cummed right of my fucking pussy. Really..why? At this moment I think that I am still in shock. I am in my fertil week and he pulled out a little late and cummed on my pussy. I shouldn't blame him. I let my SO have sex with me. We are both responsible. 
My question is, what can I do? 
Emergency contraception pills are like 50$...
Are there Any home abortion methods or is there anyway to get pills that work that aren't  expensive?