Not positive how far along I am but I've had 6 positive tests, line get darker every 48 hours.

Kr

So I'm like 98.9% sure I'm pregnant. AF also never showed up either. I have a blood test in the morning to confirm before we schedule ultrasounds and other appointments. The reason I'm posting is because I've felt pretty awful for the last few days. I've been nauseous, having headaches, dizziness and diarrhea(TMI sorry). I know it's way to early to have any symptoms from this pregnancy. I didn't have any of this happen with my son until I was in my 3rd month. Could all this mean something's wrong or just coincidence? We're estimating that I'm a lil over 3 weeks by the way.