How long to test after implantation bleeding?

Currently trying to conceive. On 6/13 I tested positive using my OPK. We did the deed on 6/13 and 6/14. I had a neg HPT on 6/25. I have a regular 28 day cycle, and my periods are normally three days long with a light to medium flow. On 6/27(13DPO) I was cramping and noticed light pink spotting only when I wiped. Later in the day I got what I thought was AF. The next day I only used two tampons and barely noted flow. It was different than my normal color. Then nothing the next two days including today. I checked my CM this morning, creamy and sticky(not something I've ever noticed). So if it was implantation bleeding, how soon should I take another HPT? Or does that not sound like implantation? Any help is greatly appreciated!!! Thanks ladies!