I went In to the ER july23, 2013 for belly pain and got news
That I was 13 weeks pregnant frm a ultrasound
But no due date so when am I due?? Help please

How would we know??

How would we know ???

U might not know but some one will!

Nobody here can tell you that. You will need to see a doctor about this.

U might not know but some one will!

Don't you track your ovulation?

About January 22, but they are still just guessing especially if you don't remember when your last period was or when you might have conceived.
How old are you?

I got January 28, 2014
Pregnancy Due Date Calculator | Tools | BabyCenter (http://www.babycenter.com/pregnancy-due-date-calculator?sub=true&lmp=true&month=3&day=23&year=2013)

Jan 28th would be if she's 13 weeks today. She was 13 weeks 6 days ago.

I put April 23 in the calculator

I think yours is right

Due dates are a best guess and can be off 2 weeks either way (that's a full month). An ultrasound goes by the growth of the fetus, but it's still only a best guess.

In other words, unless you know when your last period was, and when you ovulated (tracking ovulation using basal temperature for at least 6 months) there's no way to tell you the date you conceived, or when your due date is.

Is this a question of paternity?