Ubat kuat rahim

Salam. Saya nak tanya misal ada pcos dan mengandung in early stage perlu ke kita mintak dekat doc ubat kuat rahim? Misal doc mcm refuse nk bg dia ckp i think no need for the time being utk makan, tapi kita risau incase anything happen bcs pernah ada experience miscarriage. Should i beli je kt farmasi? Any suggestion ubat apa yg bagus ya? Tq