What are the complications with having a large ovarian cyst while pregnant?

Typically none: Most women who have cysts while they are pregnant have no complications. Some possible problems include: 1) pain; 2) rupture followed by pain; 3) twisting of the ovary requiring surgery; 4) uncertainty as to whether ovarian cyst may be cancerous. Likely your md determined that your cyst was not cancer or would have recommended removal while pregnant. I hope that answers your question. Best!