I'm 17 years old and I'm coming off of the depo provera shot so I haven't had my period in a very long time. Anyways, I have had unprotected sex... My nipples are constantly hard and sore along with my breasts. I've had stomach pain in my lower stomach but no other symptoms of pregnancy. I am not sure if I am pregnant or this is symptoms from coming off of the shot. Please help! Thank you!