My boyfriend and I have had sex today and several times within the past two weeks we use the withdrawal method of contraception. I have been experiencing some really bad pains in my lower abdomen and around to my back they kind of feel like cramps before my period. I am feeling nauseous and having headaches and sometimes feeling nauseous and sometimes feeling like Im going to be sick after I eat. One thing I have also noticed is that Im not sleeping well at all probably only getting a minimum of 4 hours of sleep at night and when I do get enough sleep I could sleep through the day. Also, I have been very bloated and gasy and Im normally not like this or any of the other things I have listed before I start my period. I didnt know if these were any early symptoms of being pregnant?