So there was a risk as the exposure was unprotected. Your main risks were....
Chlamydia
Gonnorhea
Herpes
With lesser risks...
Hiv
Syphilis
Hepatitis
Now the last 3 is quite uncommon in hetrosexual relationships but enough time has passed to get a good conclusive result with a test.
The top 3 are common. They usually show symptoms but not always. Get tested. You are more likely to NOT catch anything than not, but worth getting a test done, purely to clear your mind.
You can get gonnorhea syphilis and herpes via oral as well, though that is even more uncommon, but still worth getting a oral swab done at the same time.
oh, and i dont know his std status. He said he is clean but never has been tested so i doubt he is. Also, I know he had a few sexual partner before me thats why I am worried.