Could I be pregnant?

Patient: I made a huge mistake a month ago to let my boyfriend put his penis in me without a condom on. It was not in for very long and he swears not anything came out. I have worried myself sick because I started getting pains and cramps in my lower abdomen. I did get my period and it was normal though I did have spotting two days before. I believe the spotting was caused by me missing a few birth control pills and being on antibiotics that may have interfered. It is now a week after my period ended and I still have pains and cramps and aches in my groin. I have done both home pregnancy tests and lab tests ordered by a doctor and all have come up negative. I am still fretting because I keep thinking maybe it is too early to tell, but I have been worrying and stressed about this for a month. Could I be pregnant or should I trust the tests and stop fretting?

Doctor: