Re: HIV fear.
If you walked into a bog standard GUM clinic here in the UK asking to be tested specifically for HIV after giving a (heterosexual) blowjob, I'd be surprised if they'd recommend testing. Even if you're a higher risk, male to male encounter, id be surprised if they'd test over this.
If you read the literature, there was a large study done in (I think) Spain, which followed couples where one was HIV+ and one was HIV-
These couples EXCLUSIVELY practiced oral sex (no anal or vaginal intercourse). Over the study period (I can't remember the duration, but it was a long time) nobody contracted HIV.
As I've said on here before, hiv is actually quite difficult to contract. Think how many people of all ages practice unprotected oral sex - if this was a route of transmission, I'd argue that more people would have HIV than not!
You have nothing to worry about.
Good luck
__________________
Healthcare Professional with Health Anxiety
Be kind, for everyone you meet is fighting a hard battle