scared 😳

This guy that I was talking to told me that my ex has an STD and I knew nothing about it. Before he told me that I got a check up and I was clean. I confronted my ex and he said that he gets check up annually. Now that I just had sex with him I kinda see some strange things like last night he was taking medication and he was this morning too. I'm kinda scared that he lied... why is he taking medication???? If he does have something will I be okay since he takes his meds??? He's about to leave so I'm going to look at the medication bottles to see what they say and google what they're used for 
                             **UPDATE***
I found 3 different pill bottles. 
hydrocodone
clindamycin
amoxicillin 
These are antibiotics and pain relievers 😅 scared me shitless! Im definitely gonna start having protected sex with him anyway 
****************2nd update 
I asked him why does he have all those prescriptions and he said he has a bad tooth and hey getting pulled tomorrow. I forgot about that tooth that has been killing him for the past few months