Serodiscordent relationship

Hi.
I'm a 32 years old guy, in a relationship with a 29 years old lady who is hiv positive. She is not on medication at the moment, her CD4 is good and at the right level. I do not remember the exact figure. She discovered last year Jun that she has the virus. Not even once in our relationship we've attempted to have intercourse without condoms, safe sex is our main priority.

The problem that I'm facing, and I would like to get some advises is that, I suffer with mouth ulcers, once or twice a month and it makes kissing a problem. At times it becomes difficult to do a proper four play, that includes putting my fingers in her vagina. I suggest using latex gloves, she did not like the idea.

In the past four months our sex life has become extremely boring, it's a once or twice a month type of thing or nothing at all. We do no stay together but we see each other almost every single day after work. A month ago I had a sore in the upper part of my mouth, as we were about to be intimate and I showed it to her so that we avoid deep kissing in whatever we do, she had no sores or bleeding gums. We started having sex and we found ourselves kissing, but lasted for few seconds. After the deed I started feeling nervous and asking myself have I just been infected. It's been a month now and I have what I'll call or feels like early hiv symptoms. My lymph nodes below my jaw line are slightly swollen, can only feel them, and with very mild pain. I have something that looks like little two red pimples in the joint on my left arm, the inside part of it (could be lymph nodes). I am not feeling nausea, have stomach aches but no diarrhea.

On Friday I went for a blood test a clicks pharmacy, the nurse checked my lymph nodes on the neck and confirmed they are slightly swollen, we continued with the blood test and results were negative. However I am fully aware that one month is a bit too early for a finger prick blood test.

Please give me advises, should I be worried, go see a GP asap or wait till it's three months then go do another blood test?