So I am extremely regular. 28 day cycles, 3 day periods, 14th day is ovulation. My symptoms leading to my period are always the same.

Lmp was June 1st. This month, on the 20th, I experienced implantation bleeding. 4 days long, but only there when I wiped, never enough to hit a panty liner. So I'm 14 DPO and 8 days past implantation but I'm still pulling BFNs. I have one FRER that has such a faint line (like have to turn it a certain way in certain light faint) and two Walmart brand HCG tests that did come up with visible faint lines, but at 20 minutes past. They do have color in the lines, but beyond the time limit. My period is due tomorrow and I have none of my usual symptoms. Instead I've been vomiting every night, extremely exhausted and bloated way past normal. Is there some way I tested to early? Even though it's the day before AF? anyone have this happen? I have an appointment next Wednesday for a blood draw.