As mike_no says, oral sex with or without cuts in your mouth will not result in getting HIV. You only have to worry if you have unprotected vaginal or anal sex with them or share IV drug needles.
You were never at a risk for HIV contraction. Oral sex is not a risk and condoms are sufficient to protect.
Your symptoms can't be relevant to HIV, you never had an 'exposure'. Please understand, HIV symptoms are varied and many general health issues can simply coincide with them.
The idea of diagnosing a disease from searching through internet site is a bad idea. Most people with anxiety issues do this, it won't be a bad idea to see a counselor to address this problem. As far as your ailments are concerned, please keep working with your General Practitioner, they are unspecific to HIV or AIDS.