Evening primrose oil. & geritol vitamins

Is it good for conceiving who's had success after taking this I heared of it and I bought a bottle... wondering If any good and what its used for.? Wanting to have another bby.I have a 2.5 year old son. Miscarried in june so hopeflly I get pregnant again soon.. also considering geritol vitamins heard they were good for conceiving too.. plz get bck