confused.

I've had sex the past 4 weeks once a week. No birth control or condom. The last time I had sex was the 16th, unprotected. I've taken 2 test and they've came back negative. I haven't had my period since September 15 and that was my ending date. I'm suppose to have my period Saturday we'll see if that happens. Today I had like a watery type discharge with light streaks of blood in it, not much though. And only this morning. I've been crampy, nauseous, tired, sore breasts, bloated, migraines like crazy. I bought a first response 6 days sooner test and I planned on taking it tomorrow morning. I just wanted to get hopefully a couple insights on what they thinks up.