Is stomach pain and gurgling, especially at night, a symptom of any stds? It's been happening mostly on/off for several weeks. Had unprotected oral 12 weeks ago. Tested negative for everything at 10 week mark. Chlamydia, Gonorrhea was tested twice using urine samples (Naat) and still negative. So what is causing these pains?! Is in anxiety? Or did I get 2 false negatives? Please help.