Abortion at 11 weeks

I just scheduled an abortion on July 17th, at that point I will be 11 weeks and 3 days. I feel guilty for doing it but I am 18 and I already have a 2.5 year old. I broke up with my manipulative boyfriend last night. But I have a couple questions,

What should I expect? How can I cope? And what’s a good long lasting birth control with the least risk of infertility and it being misplaced.