I am not a medical professional. There are a lot of excellent websites, written by experts in this area. I am only repeating what the CDC (Center for Disease Control in the US) has stated.
If you are pregnant and in a area with the Zika virus, you must do four things everyday: (1) Wear long sleeve shirt and pants, (2) Apply mosquito repellent- “Off” with DEET is a good one, (3) Eliminate any standing water, in your house or around it and (4) Stay as much as possible in dry, air conditioned areas, which can translate into, “Let’s go shopping!” – on doctor’s order. If one has done everything possible, then relax.