For several years now I have been comfortably using tampons. This week, however, I have been on my period. Whenever I insert a tampon I keep getting constant phases of nauseousness and the tampons are never comfortable inside even though they are the same brand name and quality that i was satisfied with in the previous years. I am always missing my period between 3-6 months at a time, I never know when to expect it. I am yet to have sexual intercourse. Is it possible to get pregnant without sexual intercourse?! Do I have an infection, or is this completely normal? IF you have any info regarding this, PLEASE let me know, I am freaking out! :'(