Dear C.,
Welcome to Florida!!!
I know how hard it is to move to a foreign country when you're pregnant! I did it when I was 7 months along- I am originally from Moscow, Russia; gave birth to my first son in Italy; then lived in New York for 16 years, and now I am a happy Floridian for the past 4. (No further moving plans- I love it here!)
I live in Boynton Beach, which is about 1/2 hour north from Boca. Palm Beach County is a great area to live, and has plenty of top-quality healthcare. I speak from experience- as a nurse, and as a mother of a child with a chronic medical condition. My doctors are all in Boynton; no need for you to travel here, as I'm sure you can find good ones locally. In addition to the responses to your post, you can also search the Mamasource archives. This website is a wonderful resource; I've used it a lot when I first moved down here.
One important thing about accessing healthcare in the US: you need to have a health insurance coverage and go to the doctor/midwife who is a participating provider. If you don't have any insurance, it is very expensive to have a baby... There are, however, low-cost and free programs for those who qualify- let me know if you need more info.
About clothing- I too recommend Motherhood Materniy and Target for you; Babies R Us and Target for all baby things. Don't overbuy- both maternity and baby clothes get used for only a few months. In terms of baby gear, all you really need is a stroller, a crib, and a car seat. Have fun shopping!!!
Enjoy your pregnancy, and enjoy the fabulous Florida lifestyle! In another month or so, the heat will subside, and you will be in for a treat as we enter a stretch of gooorgeous weather that will last for six or seven months straight!!! In the meantime, drink plenty of fluids to prevent getting dehydrated in this heat. (Dehydration can cause preterm labor).
If you ever decide to move to Boynton, maybe we can go powerwalking together :)
Cheers,
M.