Am I pregnant ?

So I had sex dec 12 and my period came December 19 . Even thought my period came I still took a test I took a pregnancy test on December 27 and it came out negative . I’ve been fine since . But I’ve got my wisdom teeth pulled on the December 20 and I took a lot of hydrocodon , amoxicillin and ibruprofen for my teeth . And lately my stomachs been hurting , been having gas and burping and my tummy has been bloated . Idk if that’s from the medicine or not but till this day I still feel like this . And a while ago my stomach got really hot and I felt like I had to throw up but apparently I just pooped but my tummy still hurts . And I’m also on birth control