Alright so the first day of my last period was June 17th, I have a consistently, regular cycle of 24 days. Glow tells me I am not due for my next period until July 16th. Today, July 10th, I began spotting thin, bright red blood. In the morning it was pretty light, what I expected to be implantation bleeding however it began to increase in amount as the day went on. So much so It didn't seem normal at all. It is clearly not my period. According to glow and multiple internet due date calculators today, july 10th, would be the day of implantation. First response gold digital test was negative with fmu today, the 10th. Opinions??