Hi, I think u need to go see a doctor. It is possible you have an infection.the sooner u see a doctor, the better it is for you.
Sounds like you need to see the doctor and your boyfriend needs to keep his fingers out of your vagina. You might have a tear or an infection; it sounds serious and you should be seen.
Go to a doctor. Its the only way you will be sure. Just go. If you can't pay there must be a free clinic somewhere near you or a payment plan.