transmission takes place when an unprotected PENIS is inside a vagina / anus. it is not transmitted from fingering and then touching yourself.
if you have unprotected oral sex, or fingering, you have nothing to worry about HIV, and very low risk for other Stds
best wishes
No, none of these symptoms can be linked to sexual activity and are in no way related to HIV.
Neither oral sex or fingering are risks for HIV transmission. It simply does not happen this way, you have nothing to worry about.
Given that you are sexually active however, I would recommend that at least once a year you get a full STD panel and HIV testing, this is a responsible thing to do for not only you but also for your partners.
In these instances however, there is no risk for HIV.