I’m confused

I got a positive opk on cycle day 10. So on cycle day 18 (8dpo) I was having these strong cramps for 5-6 hours and at 2am in the morning I had the pink clear mucus discharge and then the cramps disappeared so at that time I was thinking implantation (I was happy lol) but I’ve been testing since and been getting BFN .

So now i just got this with no cramps

Now I’m sitting here thinking maybe at cycle day 18 when I had the pink implantation that was ovulation and this could be start of period or implantation bleed 🙄 . Seriously this annoying