Contractions ?

Rachel • 18. Soon to be mom
For the past 3 days I've been having contractions and menstural type cramps. I can't keep timing them because I have no idea if they are Braxton Hicks or the real things. They come like a wave, they start easy then reach a point and then ease up and only the top part of my stomach gets hard while the bottom I have the cramps. I've been drinking plenty of fluids and when I change positions or walk it makes it worse. I don't want to call and it end up being nothing and then I feel stupid. I'm a soon to be young mom and they don't treat young moms up here very nicely.. 
Would these be Braxton hicks or regular contractions