Figuring out due date when periods are far apart.

Julie

I just found out I’m pregnant with my 3rd! My first appointment isn’t until July 24th. So I’m curious to find out my due date beforehand. My last 3 periods have been very spaced apart. Started Feb 27, next one started April 9, then final one June 1. So I wasn’t expecting a period quite yet but I had morning sickness and something told me to take a test. To my surprise all the tests came back with the test line way darker than the control line. I about fell over haha! On the <a href="https://play.google.com/store/apps/details?id=com.glow.android.nurture">due date calculator</a> when I put the longest space in between periods which is 35 days (even though mine are closer to 50 days apart) the less weeks I am. Well with the lines being so dark and me starting morning sickness I think I would be like 6 weeks not 4 weeks. But that means I would have 28 day cycles not 50. What do you guys think?