What are the chances?

Ok so me and my bf use condoms during for protection but sometimes we fool around which I know isn't such a good idea. I'm just a little curious because lately somethings seem a little different. I have been tired more, I have mentsrual like cramps after having an or out of the blue, I have been a bit extra hungry then usual, I get a little dizzy with headaches, I have been gaining extra weight more the usual, I have constipation (it looks like pebbles when it comes out tmi) and I thought that after ovluation you get dry but I stayed wet. I figured maybe my period is coming early but ended up being false its not suppose to come till the 3rd or the 4th. So I figured maybe there's a slight chance I could be pregnant. So what are the chances with these kind of sypmtoms that I am right?