You can eat some rabbit meat while pregnant but it's best not too just in case there may be some parasites that may not have been fully cooked out.
Still if you do eat some rabbit meat do make sure that the rabbit meat has been fully cooked through before eating it.
Poultry and other lean red meats are just fine to eat when you're pregnant but it's best to avoid any rabbit or other game meats until after pregnancy is over with.
The other reason you want to avoid eating rabbit meat or other game meat while pregnant is due to parasites that cause toxoplasmosis which can then lead to miscarriages.