Clindamycin and breastfeeding?

I’m taking Clindamycin for a sinus infection. Yesterday both myself and my infant started having GI distress. I have read this drug gets in the milk and can cause issues. Anyone had experience with this? I have stopped it. I only took two doses. I feel bad because my daughter has already been struggling with reflux and constipation and was recently hospitalized for GI related issues. I am angry my doctor didn’t warn me this could happen, as she knows I’m nursing.