Help once pregnant

Dee

I found out Friday I'm pregnant. I had a short Luteal phase so am worried I won't be able to sustain my progesterone levels. My TSH is also slightly high (as high as allowed when pregnant) My dr basically laughed at my concerns and didn't even want to check my progesterone levels. Does anyone know who I go to for help and to make sure my levels will be monitored? I'm in South Australia. Both of these issues have been linked to miscarriage so I'm freaking out :/