I Recently Had Oral Sex With My Girlfriend I Licked

i recently had oral sex with my girlfriend i licked her out fingered her and made out with her and ever since i woke up this morning my body and my penis espically has felt really warm and hot also when we made out my salvia tasted strange and i spat a bit of blood do i need to go to the docters to get a check up my first time she is a virgin but she has had oral with other guys before we started dating and im worried theres a chance i could of gotten aids through oral sex