8 days late! what's happening here?

Hey ladies! So my period is now 8 days late! And I'm having some cramping in my lower abdomen and ovaries. Also TMI very clear watery discharge. No other symptoms really tho. Sometimes I get nauseous if I don't eat but idk if that's a sign. Can anyone, I mean anyone help me if they have been through this? Also all pregnancy tests have been negative so far. HELP me! I'm going crazy! I just want something to happen!