If the nipples are recently inverted, you should see your medical doctor. They could be an indication of mastitis, mammary duct ectasia, or an abscess below your areola. ...there is absolutely no health-related purpose to wear a bra, so the choice is yours, based mostly on your own own comfort https://grok.com/share/c2hhcmQtMw%3D%3D_5ad6450c-533d-442c-a09c-9f7bce1babfb