What is the GBS swab test? Exactly how is it done?

Alpha_Wolf Mommy • Our second 🌈 girl, our 3rd kiddo, was born on 02/28/19 (38wks 3days)❣️😄🌈💝 • boy 💙 (born at 38wks, 2wks early, 07/14/06), MC-4wks, MC-12wks, • 🌈 girl 💝 (born at 36wks, 4wks early, Halloween night '07 - was due Thanksgiving '07), MC- 5wks 2days 07/02/17

If you have already had yours done, please share your experience with it so I have an idea as to what to expect. Thank you ladies❣️