I got my period on the 28th of February. I usually start around the 16th but I was abroad and for some reason it switched up, which I guess is fairly normal. I got home on march 9th. My boyfriend and i have had sex regularly since I have been back. This last week I started getting nausea, abdominal pain (nothing alarming), Breast tenderness, fatigue, major mood swings, minor back pain, headaches, crazy food cravings, unusual body temp. changes, cramping, insomnia and a warm feeling in my abdomen (which could also be insignificant). It has been about 3-4 weeks since I have been back. We do use protection but usually towards the end of it however, it did get too intense and we didn't use one at all. Now, could I be completely confusing pregnancy and my period ? It feels a lot different than my period, but I don't want to rule it out just yet.