Possibly the RE could mail the meds to you. Certainly he/she should give you the scripts you need to buy them. I bought some of mine from an overseas pharmacy to save money, and some from Schraft's (a division of Walgreen's) in the US, where I am.
I would probably not count on a GP for u/s. Their u/s machines will not be very sophisticated. You should find a local RE who is willing to monitor your bloods and u/s and who will fax these results stat to your ivf clinic in CR. An ob is second choice for the u/s. I've found that my RE doesn't like to do stat bloods, though, so you need to work this out.