Your post gave me a contact high but yes - be careful!! I once fooled around with someone KNOWING I might get an STD (won't go into details why) because I was feeling so impulsive and daring and invincible and euphoric I couldn't help myself. I'm so so so lucky I didn't catch anything, that was very unlike me (at the time I had a bonafide phobia of STDs...)

I agree with suggestion to calm yourself as much as possible...hot baths, meditation, low-key music.