
So you really should not be worried about anything serious from the sexual event described.
HIV testing might be a good idea
in a few weeks, but purely for the reassurance expected from the negative result, not because there really is any significant risk.
As these comments imply, there is no rational basis for suicidal thoughts. If your those thoughts are serious, or if they persist, please IMMEDIATELY get care for it; you could start with a mental health hot line in your community.