Ok so I have had unprotected sex with my partner all the time the last two months my period has been late and only 3 days with a slow light flow when at regular periods it last at least a week and heavy I have horrible stomach pains I get Naseous mostly all in the night time with neck and back pains and headaches I've never used any form of protection only one partner and this is the first time I feel like this could I be pregnant my digestive routine is a little wierd but I've never been normal on the whole 3 times a day HELP