What do you ladies think?

We BD on the 4,6,7 of January not knowing that I was ovulating around that time as well. My period was scheduled for the 15. It was 5 days late and then when I got it, it was pink and watery and then a little red and then pink again only about 3 days. Then it quit and I went to the bathroom and I had brown spotting on my underwear but def not enough to fill a pad. I've never had a cycle like this ever before. People say it was AF playing cruel tricks on me but I somehow think that was my chance. Now I've been bloated lately. Should I just keep BD and wait till next cycle, should I test again? It only makes me think it was Implantion bleeding because that happens 12 days after conception and exactly 12 days after is when I had the pink watery substance, after 5 days late. Idk I'm new to this.