Yes, I took the miralax while pregnant. My gi guy said he gave it to his wife when she was pregnant so I felt just fine using it!!
Anytime you take fertility drugs there is an increase chance of multiples but honestly at 50mg your chances are very slim. I would ask your dr why he is waiting until cd 17 for the ultrasound. Are they doing blood tests to check your estrogen?
Get used to the waiting, from her on out its ALL about waiting!! Waiting to take the clomid, waiting to ovulate, waiting for test results, wait, wait and wait some more!
-------------------- Taking it one day at a time.....