No one listed on network option

I took out a network option last year around Aug. I am now 5-6 weeks pregnant and the drs listed on the network option does not cover pregnancy at all. And there is also no gynae on the option list. I have tried reasoning with medshield members to at least then let me upgrade my medical aid to a non network option but they refused. What am I supposed to do if there is no GP on my current list that handles pregnancy and if he there are not one gynae listed on the option list. I was told that I need to go to a Dr to refer me to a gynae but there will be co-payments. Why is there co-payment when the medical aid won't list a Gynae to the network list. This is not what I was told before I accepted the medical aid quotation. Really frustrated.