Is this normal during oral (tmi)

I don’t have much sexual experience.

From my past relationship my ex didn’t do this

I have this guy a blow job for the second time and he cummed this second time.

I went to test 1 week after I did oral and negative but he didn’t cum.

I did oral last night and he cummed

1. He was shaking before he cummed

2. Very little cum came out

3. He got sweaty

4. He moaned intensely

5 my upper rooftop of my mouth was itchy……

So was testing pointless because he didn’t cum in the first place? I haven’t had vaginal sex yet so not sure if I should test again before I do it. Sorry for sounding so dumb and inexperienced

He said he’s clear