It’s also unclear how the chemicals that are often used in tick repellents can affect the rest of your pregnancy. Many of them simply haven’t been studied to see if they cause birth defects.

Ticks are spreading globally and bringing familiar conditions such as Lyme disease with them, as well as totally new ones.

This bug spray is formulated with 15 percent DEET, which as Dr. Rose mentioned, isa safe concentration for pregnant people. The EPA-registered formula can repel mosquitos, ticks, chiggers ...