Lump\bump on cheek near buccal mucosa.

Dear Doctors. With heavy heart i want to explain here that in dec 2019 i had unprotected oral sex where i was giving oral to the girl. 3 months after the incident a bump / lump developed near the buccal mucosa on both side and the size is constant. and a small bump on hard palette. I have done all the STD test and fortunately all are negative.I am very much worried about HPV and think that this can lead to oral cancer. Can this infection because of the HPV ? Is HPV test possible with blood sample if yes then kindly mention the name of the test. If blood sample is not suitable for test then please advise the other test with name . Is this advisable to take vaccine now to control my HPV situation?Please advise the name of the vaccine . I pray to all of you to please guide me because i am dying every day due to the situation