Medication or supplements to take for Oab while breastfeeding

I have OAB after I had a kidney stone, stent and surgery to remove the stone. It’s been over two years. I’m so depressed most of the time. I need my life back. I got pregnant 4 months after the surgery because I’m 33 and I didn’t want to wait any longer to have children. I want to have another baby but I want to manage this Oab first if possible. The Oab has nothing to do with the pregnancy/ child birth, I had to before I got pregnant. I’m breastfeeding and we struggled with that due to a tongue and lip tie. It’s very important to me that we continue to breastfeed. Are there any Supplements or medications I can take while breastfeeding that won’t affect my milk supply or harm the baby?