I would drive. You can always pull over if your cx start. If they were like when mine started, they were not really that bad, so I could have easily driven through one if I needed to get off a busy road. Locate where your hazard lights button is (sounds silly, but you probably haven't used them before) and then put them on as soon as you pull over, then call 000. GL!! I'm sure your DH will be with you and if he's not, I am sure you will make it to the hospital before they start, cause you will probably be anxious and this MAY prevent them???