Uy, with anything supplement-related especially when you're pregnant or breastfeeding, kailangan mo talaga mag-check with your OB or doctor muna, hindi ako dapat mag-advise on combining meds, sorry! The ubo is bothering you talaga, kaya please don't delay in asking your doc para ma-address both the cough at the supplements together. They'll know exactly what's safe for you. Sending you well soon!