Implantation dip?

Sa

Hello. I tracked O with OPKs and had O cramps like usual. I missed a number of days, but how does my chart look otherwise? Mild cramping night before dip and since on/off. Sore boobs. DH said my boobs felt heavier today too but didn’t think so yesterday. They feel fuller like when I was due to breastfeed back when DD was still BF. AF due 2/7.