period or pregnant??

So my last question was asking if my symptoms were sounding like pregnancy. I'm a week late on my period at this point but I started to bleed a very small amount and it is very much so more "water" than blood. Just a few drops every once in a while. This is really unlike me. It hurts like my period but not as bad. My period is typically very strong in all aspects. My mom is getting me a test soon but I'd like to know what is going on :p