Prenatal vitamins

Em • Mummy to an angel 👼🏻 ,a little boy Jamie Ross 👶🏻💙, pregnant with our second rainbow baby 🌈 after a chemical pregnancy
So my husband and i are have been trying for a baby for a year and yesterday inwent to the doctor and she put me on a new drug to try but she said I should be taking prenatal vitamins. I understand that they will be good and all but we have a tight budget and our track record of getting pregnant is bad. So i was wondering if i should take them or not. Im so torn