No period no positive

I'm on day 55 of my cycle thats 5 or 6 weeks from the last day of my last period I tested on this last friday and was negative but I have no spotting or anything wth?!?! Also have had killer heart burn for 2 weeks like bad! Like if I bend over I puke in my mouth!! Grossss what do I do?!?! Just wait it out or keep spending money on pregnancy tests!?!?!