I finished my period on 13th October and on 18th October (Saturday) I had unprotected sex with my boyfriend. Since Monday I have had period-type pains-like a dull ache that is constantly there. I am REALLY bloated to the point where my jeans don't fit and I've been feeling sick on and off all week. I have gone dizzy a few times since and have been very tired. I'm a teacher and I was staying behind at a club where a lot of the children were eating pickled onion crisps... They're usually something I love but the smell made me feel really sick. I did a test because I could wait but of course it was negative because it is too early. Im driving myself mad wondering- is it possible to be getting these symptoms so early on? Or is there anything else it could be? Thanks :-)