Help !!

Kayla • 24 years old, engaged to my soulmate, our first pregnancy didn't fall thru, but now this baby has a heart so Thankful !!
Soo I've been having the worst leg cramps ever, my dr told me I can take up too 1000 mg og calcium magnesium, at home I have calcium magnesium& zinc does anyone know if the zinc is okay to take as well?