Ovarian cysts are very common. Most go away on their own. What type of cyst is it and is your doctor just monitoring it for now? Or does it have to be surgically removed? If it has to be removed, seek out a surgeon who will remove just the cyst allowing you to keep your ovary so as to preserve your best chances for pregnancy.
I had a large cyst on my tube which required surgery. I had a baby 4 years later! So yes it is possible!