How long do i have to wait to get pregnate after i remove my left ovary cause i have a cyst?

As soon as you want.: You can attempt to get pregnant during your next cycle if that is what you want. It's impossible to know in advance if the remaining ovary will take over and ovulate every month, but lots of women with only one ovary are able to achieve pregnancy. Use over the counter ovulation test kits to see if/when you are ovulating and have intercourse around that time, that's your best shot. Good luck.