Teenager. Tear In Foreskin Due To Intercourse, Burning , Painful Urination. Advice

i am 19 years old and sexually active. During sex my girlfriend jerks my penis if thats the correct term. and sometimes its dry, which causes it to get tears in the foreskin sometimes (I am uncircumcised). Usually they're small, and after a few days they heal, first scabs appear, and then then back to normal. Being dum, i continued to have sex and engage in the cause of the cuts without letting them heal, and now they're even bigger and worse. There at at least 5 around inner part of my foreskin. When i pull back the foreskin, they enlarge and stretch and it burns and hurts so bad. Peeing is a huge pain, because the urin burns the cuts, and if i pull foreskin back to pee, it stretches out the cuts again, and making it harder to heal. But i have to pull it back because i have to clean it. When foreskin is closes, the cuts close up, and the skin from each side around the cuts, meet, which in my knowlege means if it stays like that for a while, it shoould heal. Please I need help. I am going to consider going to the doctor tomorrow, but any quick info could help please.