Could I be?

Chanelle
I know this is a common question but I would hearing ppls answers. I have been tracking my period for at least the last six months now and I'm very regular. I have been on glow for 4 months now and I hade sex 2 times during ovulation. My period was supposed to start on the 26th and I have had nothing. Usually I know the day before or I can feel it coming on when I'm close to starting but I don't feel like my period is due at all. Tomorrow will be 4 days late. I tested three times once before, the day af was supposed to be here and today. Is it to early still? They were all negative. It says that the 31st would be roughly 5 weeks. How far along were ppl when they got a positive?