Agree with Life360, and have to say to stop taking these random antibiotics. The doses you're taking are wrong, Cipro doesn't cure any STDs, and they might give you false negative test results. Stop taking them for a few days and get tested. You may have to test again.
Your symptoms could be anxiety - there's no way to know, but you had unprotected sex, so you had a risk.
If you had unprotected vaginal sex with a sw, and your concerned about std,s, having uretha pain like a burning sensation would also have a white puss penis discharge. The white puss discharge is the main sign of an infection. If i were you, i would see a doctor and get tested for all stds that can be contracted. Takeing the anti biotics may or may not hinder the test results.