Chance?

Ok so last month my AF was way off. It started a whole week before it was supposed to. Going off that I was supposed to start again 5/27. I still haven't seen any signs of AF, but my cervix feels low, soft, and closed. I've also had really sore breasts and been nauseaus, even to where I threw up yesterday. I'm camping this weekend so I can't take a test but if I haven't started by Monday I'm going to get on to take. Any of you had the same symptoms and end up pregnant? I don't want to get my hopes up again. We've been trying to have a baby for 2 1/2 years :(