Help!!

So, I took a clearblue earlier pregnancy test on Saturday - faint line, took the digi "not pregnant" took clear blue early test on Sunday - faint line, took frer on Sunday pm and Monday - faint line. Took one step test twice today - not pregnant. So 4 bfp and 3bfn. (All bfp came up with timeframe) I now have brown discharge, little in pants (tmi) mostly when I pee and wipe. Had killer headache yday and very light cramps very low in stomach last few days. I'm going insane! Help! Do I leave this until the weekend and retest? Anyone know if one step are accurate and this months chance is over?