I hesitated to take the test and returned with painkillers

The Reglim is 18 days late; normally, it wouldn't take this long. Also, I've had an increase in acne over the last two months, and sometimes I feel a stabbing pain in my right groin, but the possibility of pregnancy is nagging at me because my girlfriend looked at the calendar and said it wasn't a big deal, and I stupidly went silent at that moment. Yesterday, I went into the pharmacy to buy a test, but I felt embarrassed and ended up buying painkillers instead, thinking a familiar face might show up in the neighborhood. I've never been to a gynecologist; the examination part seems daunting to me, but I can't tell if this is a funny mishap or something serious anymore.