Implantation bleeding

Hey guys, I am looking for some advice. My husband and I have been TTC for 6 months now, we've been <a href="https://play.google.com/store/apps/details?id=com.glow.android">tracking ovulation</a> and according to that I should have been fertile from June 18th and ovulate on the 23rd. My periods are usually on time 6th of every month, lasting 5 days max along with what i concider heavy flow day one and part of day two and mass clotting and mucuas and the last few days just average with spotting off toward the end so here is my confusion.

We DTD a couple times along with on the day I supposedly ovulated. A few days later (3) I was having random neasuea, hot flashes, tingling boobs and cramping but I kept my apatite and I was just tired a lot. This has lasted on and off continuing until today. Now today is the 6th the day AF comes to visit, I woke up and used the bathroom and saw I was bleeding, but it's not normal, it's extremely watery, pinkish no clotting, very light in flow, I am feeling light cramps on the left side of my pelvic area. I don't know if I am just getting my hopes up and this is just a random period that is different then all the others or if this could be implantation bleeding. Hope some one could she'd some light on this for me. TIA