Implantation bleeding

Shelbie • TTC first for 6 years and miscarried at 7 1/2 weeks with twins. 3 months progesterone only. 5 timed intercourse cycles, 3 IUI cycles, 9 timed intercourse with trigger shot. All fails! Have till September to conceive on our own then we are onto IVF
If you had implantation bleeding, when did you take your hpt