Help meeee

Me and my hubs have been ttc since June.

I was hoping maybe I could get some insight to what's happening to my body.

I'm making a doctors appointment, but I'm seeing if anyone has been through this as well.

So my period is 14 days late, I'm on cycle day 47. My periods are always on time & regular. I've taken like 4 pregnancy test & they're all bpn. But since my period was due I've been having on & off brown discharge, only when I wipe. But yesterday I started spotting red, & there was a tiny clot so I thought my period was starting, so I went ahead & put a tampon in, took it out later & it was clean. Then today I started bleeding like medium, so I went ahead & put a tampon in, & again I took it out later & it was clean. I'm stumped.🤦🏽‍♀️🤦🏽‍♀️

Anyone else been in this situation??