Any cycle buddies!!? Need help!!

Hey There Buddies!

I am wanting have my second kid. And my first one is going to be 2 yr this month. :) I had my FMP on 25th April and my opk on 10th May (based on the app as well). We met on 12th, 14th and 16th day (on ovulation day). I have no clear pregnancy symptoms like in my first pregnancy I had many. I dont see a implantation bleeding too and its past 10DPO. I can feel lower back pain and cramps but these are look alike to PMS. I am just confused..:( Currently, I am unable to feel if I can feel those pregnancy symptoms (if i had any). Any cycle buddies out there under same boat? Please help.