Worried...

So I've been 2 weeks late, and have had every pregnancy symptom known to man. Unfortunately, tests always wnd up negative. Course with my oldest child (I have 2) I barely showed up at 10 weeks on a test. Today I passed alot of mucus (like I looked at the toilet paper and went, "damn..."), and now I have sharp painful cramps and bleeding. The bleeding isn't heavy, but it definitely there. And there's nothing with it either like my usual period. No mucus or blood clots, just straight blood. My cervix isn't like it usually is either when I'm on my period. My body is confusing me so much. This has never happened before.