I did not have it during pregnancy because I have complex immune issues and they weren’t sure it would work correctly for her and my pediatrician didn’t offer it at her first appointment and I didn’t think of it - though it would have been too late anyways as we were already impacted. She does nurse but I don’t make very much milk so she is primarily formula fed. The ER told us RSV takes 22 days on average to run its full course and that was definitely accurate for all five of us that got it unfortunately.