TTC#2

Hello ladies! Thought I reach out to y’all to see your thoughts. I was expecting AF Sunday, but nothing. I had very minimal brown spotting yesterday. Today still a little brown spotting nothing to fill a tampon/pad and some mild cramping. Very mild compared to what I get normally. Took a pregnancy test and negative. Could it be just old blood, just seems so minimal. Could it be implantation and my ovulation was off? Has this happened to anyone and got pregnant or their period? Thanks!

P.s. would have had sex after, but Hubby left on the 16th for his TDY. 😭😭