Mama, ito talaga ay medical question kaya please consult your doctor or OB muna bago ka kumuha ng kahit anong medicine, lalo na kung breastfeeding ka pa. They'll know what's safe for you and baby.
I know sobrang uncomfortable ang pain, pero better to check with your doc para sure. One of my mum friends actually called her OB agad about this, at sabi niya relief na relief siya na nagtanong. Kaya don't hesitate, ha, your health matters din!