Confused??

I ended my period 2 weeks ago and my fiancé and I have been baby dancing like crazy...for a little over a week I've been throwing up every day at the same time and for two weeks I've had terrible heartburn at the same time everyday..yesterday and the day before I went pee and when I wiped there was a tiny bit of light brown(I'm assuming is implantation according to my research) and that lasted the two days it normally does. Is it too early to get implantation bleeding? Or what? Cause I'm supposed to start AF in 14 days..but having these pregnancy symptoms is obvious.