Mutual masturbation is no risk at all for anything, nor is fingering.
Rimming and the licking is a slight risk if he has oral herpes. If you don't already have hsv1, you could get genital hsv1 from oral to genital contact. Using the condom reduces your risk a lot. You can have oral hsv1 and never have an actual outbreak - 90% of those who have it never get any symptoms.
Syphilis is also a risk from the same things, but he'd have to have an actual syphilis sore to transmit it. (Herpes can transmit without any symptoms.)
The chances of both are quite low, and if this is your only risk, you don't need to run out and test.
There is also a chance of rectal gonorrhea if he had it orally. The chances of you getting it aren't great because gonorrhea resides in the throat, and unlike when someone performs oral sex on a penis, nothing is going in the throat during rimming, which reduces the chances.
I'd say again, if this is your only risk, no need to run out and test if you have no symptoms.
No risk from you masturbating into someone's mouth if your penis didn't really touch his mouth.
Hope that helps (and really, I hope it makes sense lol). Basically, if you don't have symptoms, you don't need to test. If you are sexually active, it's a good idea to test regularly.
So it was still itchy and sore at about 16/17 days so I went and got tested (I know hiv and syphilis is 4 and 6 weeks but not worries about those as so low risk) so waiting for Chlamydia and gono results.
I've started to get sore patches on the corners of my mouth. As I never par took in ANY oral activity with my mouth, am I right in thinking it is totally unrelated and prob more to do with weather/temp changes any maybe stress/anxiety?