Hello, and I hope I can answer your question. Your girlfriend does NOT need to use a pregnancy removal kit if all the tests show that she is not pregnant. Please do not use the kit and I hope this information is helpful. Irregular periods are not unusual in women, and skipping even for a few months is not unusual. The fact that her pregnancy tests are negative means that she is not pregnant now, but even if she doesn t get her period, she can still become pregnant unless you use some type of pregnancy protection. If you have never found out why she has irregular periods, it would be a good idea to visit a GYN doctor sometime and have them do tests. Irregular levels of her thyroid hormone, or stress and other problems can affect menstruation. Birth control pills can provide contraception and make her have a regular cycle. So in summary, if her pregnancy test is negative it means she is NOT pregnant and I would not use the kit you purchased. She should see a GYN doctor to find out why she hasn t had her period as it can indicate a problem. I hope this advice was helpful and good luck. Take care, Dr. Brown