Random spotting

El
Sorry this is long but I need to know if anyone else has experienced this. I had a miscarriage May 25. I started spotting hours before my ob/gyn appt at 10 weeks. The sono showed no heartbeat and now growth since our 6 week appt. I opted out of medications and D&C and waited only 1 day before passing my baby naturally. My hcg levels were back to zero the following week. We were given the okay to ttc as soon as my bleeding had stopped. We started ttc again on June 4. On June 18 I was cramping badly and noticed some light pink spotting during a single trip to the bathroom that day. I figured I was going to start my period but I never did. On the week of June 25 I started having egg white mucus so I figured I ovulated then. Yesterday I noticed the same cramping and spotting just the one time again. Still no period. Just took another test and it was negative. Kind of hoping I had some implantation bleeding and I'll get a BFP this weekend. Has anyone had this happen? Any ideas?