I've missed my period this month. Im about a week and a couple days late. I have had no symptoms of a period. The only thing that has happened is sore nimples. I ended up becoming nauseous a couple days ago, and last night vomitted three times, along with a headache. I woke up this morning still nauseous, but head ache is gone. Nausea comes and goes. I have had to go to the bathroom more than usual, both to urinate and have a bowel movement. I don't ever get sick like this before or during my period, nor do I miss my periods. Unfortunately, I did not take birth control this month or the month before, and my bf of 2 years and I do not use any other method of birth control, just the "pull out" method which I am aware that isn't effective.
Not sure what is going on. I am 20. Thanks in advance.