hello, me and my boyfriend had unprotected sex on new years and ever since we have been using the pull out method, ive been haveing cramps for about a week where it feels like im on my period but im not due till 20th. ive also been having headaches on and off, dizzyness, and i feel exhausted all the time, it doesnt matter if ive had enough sleep or not. i know that its impossible to know whether your pregnant until you have missed a period but i want to know whether its all in my head or if i shld actually be concerned....

thanks. x