Me and my boyfriend have been seeing eachother for almost a year and I take birth controll and I've been on it for 5 months. We have sex but never use a condom, he always pulls out and I know there's precum but we thought cause I'm on b.c. I'd be safe. But we had sex the day I got off my period [ the last day of april] and about two days ago my boobs felt very tender and today I woke up feeling very sick but thru out the day I stoped feeling so sick but I am very sleepy and moody.. I was prego before but lost the baby but I had signs of prenancy very early... could I be preg.?