Initial appointment

I have an initial appointment at the local pregnancy center tomorrow to try and schedule an ultrasound. It is a bit unnerving not knowing a due date. It is a long and detailed story that will probably sound like mumbo jumbo by the end. To simplify, I never really started a regular cycle after Cheyanne's birth, so have no idea of a due date. After looking at some signs, I am thinking the baby is due sometime in early July. Rich would like me to find out a more specific date if possible so that he can schedule his 2 summer intensive classes accordingly.
I will update when I find out more!
Amy