Headaches a sign of early pregnancy?

Rebecca
Has anyone experienced slight headaches and almost that feeling like your going to get sick (aches and pains in your back) as an early pregnancy sign? I'm in the hell of the TWW, AF isn't expected until around 5/24. Just wondering because I don't feel like I'm getting sick, but i have all those aches, minor headache, and my breasts are starting to hurt. Has anyone else experienced anything like this? Fingers crossed this is a good sign!!