The first day of my last m/c was 3/7 and lasted only a few days. I am usually extremely regular with my schedule because I use birth control pills. However, I got thrown off this month and could not start my oral contraceptive until 3/11. I had unprotected sex on 3/16. I have been feeling very VERY strange recently. I am incredibly sick to my stomach, I have lower back pain, frequent headaches, my breasts are sore and tender and I have been eating everything in sight. Is there any possible way to take a pregnancy test this soon and know if i was pregnant? Or do I need to wait longer? Is it even possible for me to ovulate if i was only off my birth control for a short period of time? Please help, thank you!