The last day of my first period was nov 11. My cycles have been extremely short, sometimes 26 days. I could feel myself having ovulation pain on day 12 of my cycle. We had sex 4 times during my window. Now today is day 17 and I woke up to the worst dizziness I have ever had in my life. I'm trying not to move because the room spins and I get so nauseated. Also have pain running down the back of my legs. Could I possibly have just conceived and I'm already feel symptoms? It's way too early to test. Probably can't test for another week. Any feedback would be appreciated. I've never been pregnant before so don't know what to expect.