TRYING TO GET PREGNANT BUt....?

hey! well ive been trying to get pregnant for about a year now and have irregular periods so i think thats not helping me at all.ive been trying for a year and still no luck....im thinking about taking clomid.....do i have to get a prescription???? i have medi-cal so i dont think that its going to cover it,i live in los angeles so does anyone know about any doctors i could go to and get a prescription???has anyone bought clomid and just took it and got pregnant???serious anwers only! thanks