A bike crashed into me, there was blood all over my arm. and i was bleeding myself as well on my own wounds (on the arm too). will i contract hiv?

Not this way: You can only contract HIV from somebody who's infected, and even this isn't easy to do. The lip injury tingles because the nerves are re-growing. I'm sorry you got hurt, and even more sorry that you were afraid of contracting HIV this way -- it just can't happen. Spend a little while getting familiar with the facts about this important infection -- knowing the truth will keep you safe ; unafraid.