I'm posting a pic of my calendar for reference...

So here's the deal I'm on a 28 to 30 day cycle with periods that last normally 4 to 5 days total. This period lasted less than 24 hrs. I took a test a cpl days after the fact and got a very very very very faint positive. I re tested and come to find out that was a faint positive as well. I never bled with ANY of my pregnancies. I have 2 live and 3 in heaven. Could I be pregnant? I called the dr a few min ago and I'm waiting on a call back at the moment. I don't know what to think at the moment