Weird spotting, 5 days late?, Stopped BC

Nicole • Married 💍mommy to 3 boys, 1 girl and 3 angel babies 👼👼👼. Our rainbow is due 11/18/19 🌈

So I stopped my birth control middle of last month, (did the same when we starting TTC my daughter). My period went right back to normal the next month with no issues when I stopped it the first time. And it took 6 months to get pregnant with my daughter. I expected this to be the case this time as well... Boy was I wrong.

I'm currently 5 days late, tested at 3 days late and got a BFN, ok so AF is just running late due to stopping my birth control last month, right? Or so I thought. Then this morning I had watery pink discharge/blood only when I wiped (nothing got on the panty liner). It lasted for an hour then stopped, I havent had a spot of blood since 🤷‍♀️.

Is this just a really weird start to AF? Or did I ovulate late due to stopping the birth control and I'm not actually late yet? Could it have possibly been implantation bleeding? We had sex on 2/4 so today is 7 days from then and I know implation can happen 7-14 days from conception.

Is it possible I got pregnant in the first month off birth control?? If it was implantation bleeding when should I test again?

Should I just tell my husband he doesn't get any for a month cuz my body is on strike/freaking out?? 😂

I'm really confused and did not expect this to happen, since everything went smoothly after stopping birth control the first time... And I'm unsure of when I actually ovulated as I didn't plan on tracking that till next month...