Hi.. my gf and i had unprotected sex about 3 months ago.. i did the pull out and i was only in her for a few seconds before realizing that this was risky.. she wasnt on the pill and i did not imagine that precum cud cause pregnancy. her period was due in 7-8 days time (around the 25th-26th of the month) from that day and it came on time. about two weeks after that again we had unprotected sex without me cuming in her... and she took the emergency pill right after it.. which caused her a lot of discomfort.. and also showed some sideffects of the pill.. this was roughly around the 5th of the month.. about a week or two after that i was kinda worried so we took a home pregnancy test and it came out negative. then again in a week or two we had unprotected sex but i didnt cum.. and we took the emergency pill.. but this time it didnt cause her any discomfort.. and in the next month she got her periods around the 6th.. which is about a month from the date she took her first emergency pill... and she also said that the period ended sooner than normal. so roughly 12 weeks after the first time we had unprotected sex.. i got her to take another test which came out negative again.. and its the 7th of this month today and she still hasnt got her period yet.. can it be possible that she may be pregnant.. this is my first time experiencing this and im really worried... please help.