Dpo question

So when do you start counting? So I ovulated 17-23 of November. I had sex the 16 and the 20,21. So last week Tuesday the 25 I started to not feel well. Usually before my period my nipples hurt a lot well this time they hurt a little. I had a headache from that Tuesday till December 1st. Along with that I also have stomach cramps that are in my lower back as well. I also am lightheadness and I'm always dizzy it just feels like motion sickness all the time. So I take the motion sicknesses pills and it helps a little bit till the wear off. When they wear off its like death. So I talked to my doctor and she know we have been trying. So she said to wait till my period is due on the 6th of December to do any kind of testing tho I think she might order me a blood test. So what do you guys think about the timing of sex with the ovulation days?