unsure/when is the due date?

According to the Clearblue test, I’m 1-2 weeks pregnant. The leaflet says to add 2, so that makes it 3-4 weeks pregnant.
When would my due date be approximately? Sorry, it probably sounds really dumb, but it’s my first pregnancy and I don’t get how it’s calculated at all. I don’t know the first day of my last period, for example. I hope someone can help me out.

Hi anonymous,

Congrats!!
If you don't know the first day of your last period, it's indeed tricky. You can probably assume you're about 3-4 weeks along right now.
You'll only find out the due date at the dating scan.
Someone who knows the first day of their last period might have a better guideline, but ultimately, the actual due date is only confirmed with the dating scan.

Best!