Implantation cramps?

👶🏻Sweetness⚓️ • Instagram; Hannah.the.gem (add me there for messaging)
Right now I'm not sure when my O day is but I'm having slight cramping on my left side only for the past two days. It doesn't feel like AF cramps and it's not due for another like 3 weeks (I have a 45 day cycle) 
What could this beeeee???