We don't discuss symptoms here, if you are feeling unwell or sick please speak to a doctor to find out what is making you ill.
So as you had a risk I would recommend testing for HIV, depending on your location some countries offer over the counter home testing kits from pharmacists. In my signature you will find links with more information on testing in general.
I also recommend however as you are sexually active, to get a full sexual health check-up / screening including but not limited to hiv testing. This should be something done anyway at the very least annually.
Now I understand from your post you are having some fears in regards to testing, I don't know your location however I am including this link to a short video showing an Irish guy and girl in Dublin getting tested, Its shows how easy, painless and quick getting tested actually is. https://www.youtube.com/watch?v=iKgdpqm9OEI I hope this helps reduce your fear of testing.
Here's what you need to know in order to avoid hiv infection:
Remember that some sexual practices which may be described as ‘safe’ in terms of HIV transmission might still pose a risk for transmission of other STI's. So please do get fully tested regularly for all STI's including HIV and more frequently if unprotected intercourse occurs. Also note that it is possible to have an STI and show no signs or symptoms and the only way of knowing is by testing.
Finally use condoms for anal or vaginal intercourse, correctly and consistently, to avoid sexually transmitted hiv infection.
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