Welcome to HCM.
The chances of getting HIV
through oral sex
is a very very remote possibility.
Earliest symptoms in HIV can occur only after 3-4 weeks, not earlier than that.
Symptoms explained by you can occur to anybody. Pain over testicles, abdomen and forearm are not common symptoms of early HIV. As Your tests were also negative you need not bother about HIV.
Relax and have a nice time.