I need help figuring out due date

Okay so I am definitely pregnant. This will be my 3rd baby! I have almost 5 years old and almost 2 years old boys. My husband and father I weren't trying to get pregnant but also didn't think I could because I have crazy cycles. I honestly don't remember the last time I had a period. I think it was April sometime but it was super unusually (for me) light and short. I've got a long history with messed up cycles so I just stopped giving a damn about keep track of anything. Anywho, we had unprotected sex one time assuming that we couldn't get pregnant or probably wouldn't. And here we are. I didn't test because of a missed period, I tested because I felt pregnant! Being my third time to the rodeo I had a feeling. I know the exact date we had sex, but every time I put that into calculators it always comes up with me being more pregnant than I am. Can anyone help make sense of this?/help me guess a due date so I can figure out how far I am along until I get to the Drs office? May 31st was the date. Thanks ladies!!

Glow Resources

Let’s Glow

Glow is here for you on your path to pregnancy

Glow helps you navigate your fertility journey with smart tools, personalized insights, and guidance from medical experts who understand what matters most.

25+ million

Users

4.8 stars

200k+ app ratings

20+

Medical advisors