Today me and my bf started making out, he had his boxers and shorts on while i was wearing my undies and a pants. i was sitting on top of him and things really got carried away but our clothes stayed on.I am now really freaking out as i am worried if i could be pregnant, i feel really upset and my stomach was paining and i felt like vomiting earlier.I was on my period but after this afternoon's make out session iv noticed my period has stopped..could this be just a coincidence?i am freaking out here .HELP!