I am confuse

So I have this app and the ovia app. For some reason for this's cycle the fertile window was a little different per the apps. I really dot know how many dpo i am since pero glow i can be 10 dpo and per ovia I am 7 dpo. I have been having minimal nausea, cramping, dizzy spells (bad ones) and my boobs started to feel very tender and full like since Monday. My question is how many dpo could I be ? And my temps have been steady @98.0 to 98.3