AF or Implantation

Angel • Wife:5 year old son👦🏼 and a rainbow baby on the way!👶🏼 🌈

I'm due to start my period on Feb 2 and the past two days I've had brownish spotting which is very unusual for me. I normally will spot the day before a little but that's it.. not 4 days in advance. I've also had cramping for about 1.5 weeks. I have recently started exercising quite a bit 4-5 time a week and I read that could be the reason for spotting. Has this happened to anyone before?!?

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