First of all, you would know if the condom had failed. (broken) When a condom fails, it fails catastrophically. There is virtually nothing left but a few shreds and the ring at the base of your penis. I do not think your condom broke.
If a condom slips off, once again, you would know this immediately when you withdrew your penis from her vagina as there would be no condom on it!
You say you don't know if either of these things happened, but I have to wonder how you wouldn't know.
You do know that women produce vaginal fluids, sometimes in rather large quantities and it often is mistaken for seamen. Since I believe it's unlikely the condom broke or slipped off, I would say that it was vaginal secretions you saw.
The tests you have taken so far are 4th generation, but they are NOT conclusive at 45 days. Your test at 6 weeks is a good indication of your status which is negative at this point. A 4th generation DUO test at 12 weeks will give you 100% conclusive results. Since the lab tech told you the test at 3 months would be conclusive, I don't know why he would say "AND 6 MONTHS," unless this lab routinely rechecks at 6 months as part of their protocol. You could always call and ask them. Since you say this is a good lab with a good reputation, I would advise following the protocols they have in place.
Symptoms are NEVER used to diagnose HIV no matter what you've read on the internet. Your symptoms sound more like anxiety than anything.
Any blood drawn test from a lab will give you conclusive results at 3 months.
I don't believe you ever had a risk so please try to relax and work on your anxiety.
I am sorry to interrupt but your test are conclusive in my opinion .
4th generation test ag/ab combo are conclusive at 4weeks as long as you didn't take Pep
12 weeks is for antibody test only
Cdc: is consertive and they research has been done on antibody test only
If this isn't enough proof for you
Please google :" HIV combo 4weeks hhh medhelp" and you can have nice proof from an award wining doctor names hunter handsfeild so I want you to know your test is conclusive even though your risk would have been zero and you would have known the condom had failed as it leaves no doubt