Before you remain in euphoria of not having any infection, I would like to share some information with you:
1. Ejaculation is release of semen. It does not necessarily release the infections and has not necessarily has control over transferring the sexually transmitted infections.
2. Many sexually transmitted infections are on the skin of the penis and/or surrounding skin and they get transferred even without ejaculation or even without penetration. Even some are present in the
urethra which discharge without ejaculation and transmit the infection.
3.
HIV is not the only sexually transmitted infection. In fact there are more than 20 types of sexually transmitted infections - viral, bacterial, fungal, etc. Absence of HIV does not mean that no other sexually transmitted infection is present. Each infection has to be diagnosed separately - clinically and with their specific tests.
Your history clearly suggests that you do have contacted some sexually transmitted infection through the
oral sex you had with the partner.
The two nodular swellings you have developed in the sublingual glands is a sufficient sign for this.
Please do not rely on the narration of the partner about use of condom and his cleanliness. You have been infected. So the first thing you do is to report to your venereal physician, get properly diagnosed and get completely treated.
And one more earnest advice - Please do not have any type of sex with anyone before you are certified by the physician that you are COMPLETELY cured of the existing infection, otherwise there is a great risk of you spreading this infection to the other partner(s).