Help!?Implantation or early period?! Story below

Leeah

So I had a late miscarriage in sept. Got my first period about 6 weeks after. Have had a normal 28-32 day cycle every month since. I did opks this month and here’s my chart and I ovulated about 11 days after my period started. We had sex that Sunday, Monday, Tuesday and Wednesday. So we covered the bases. Fast forward to today. Only like 18 days after my last period. 7 dpo. Period is due in 11-12 days. And I’ve been lightly cramping and just started light bleeding red. Think it’s just super early period or possibly implantation ? I didn’t have implantation bleeding for my last two pregnancies. Just sad and confused right now. Please comment your thoughts and experiences!

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