He was also touching his penis and fingering me
Well you caught Chlamydia off him so theoretically he could have gave you HIV.
That been said, HIV is rare (undetected) so it would be very unlikely your partner has HIV. Are you still in touch with him? If so ask him to get a HIV test his would 100% be conclusive if he agrees and then you know you can’t have got HIV.
On to your tests at 30 days as you have been told it’s not conclusive. Sorry i can’t lie. But that dosnt mean it’s not reassuring. It sounds like a 4th gen test and they can become positive as early 4 week and if your cold symptoms are related I’d expect it to have been positive.
Try to relax the odds of a one off exposure leading to HIV is low.
This was not an exposure that would result in getting HIV. HIV is only transmitted by unprotected vaginal sex or anal sex WITH penetration or sharing IV drug needles. Transmission has to take place within the host. Fingering is never a risk as air inactivates the virus. This exposure is NO risk for HIV