No this does not sound like a STD at all, but I would see a Dr to find out what is going on.
You are worried. If you remain worried, getting tested does not cause any harm. I am sure you will be fine.
Thank you for your reply. I know it might not be std related but what scared me was that it happened after I had sex with her and it's the first time i'm experiencing such symptoms.
Thank you for the reply. I am extremely worried. I thought about having some serious std like syphillis or even HIV. I use to think about that 24/7 in the first weeks. Im young and dont want my life to end as it just started. But with time i'm getting less anxious but I'm still worried. I think I'll have to go see a doctor in the next few weeks so I can get some relief and move on.