The last time me and my girlfriend had sex was January 5th, right after her period(unprotected, birth control). I didi not even come close to ejaculating in her, and only did it for half a minute before we reminded ourselves it wasnt safe. the following week on tuesday, she started having a weird spotting, and some TERRIBLE cramps,and we both concluded it wasnt implantation or anything since it was hella early for that and it went on for about a week. She missed her next period(21 day cycle), with no symptoms of preg except some random cramps and a tad constipation, a week after that we took 2 preg test, both negative, another week passed and not a period in sight, but another negative preg test and persistent bad cramps. We were almost positive she wasnt preggers, and our thoughts were confirmed with a big period a week later. We just figured it was a cycle change on Losteirn 24 after being on it for a year, and it was a normal period, but two weeks after she started feeling bad in the morning and the constipation continued. she has a history of ulcers so i took her to the doctors earlier this week, did some blood work(not  for preg test) and a urine test in the evening. doctor concluded she was just really constipated, neg for preg test and prescribed some medicine. it's been 3 days since that visit, and the medicine has her feeling better except for some weird stomach feelings. I'm still a little worried, but she seems fine about everything. Can she STILL be pregnant?(not try to conceive, both in first 2 years of college in midterms)