How do i work out due date my period was last weeks in July?

To calculate your estimated due date based on your last period, which was in the last week of July, you can follow these steps:

1. Count back 3 months from the first day of your last period.

2. Add 7 days to the date you calculated in step 1.

3. This gives you an estimated due date around the end of April or the beginning of May.

Keep in mind that this is just an estimate and the actual due date may vary. It is always best to consult with a healthcare professional to confirm your due date.