Cysts and pregnancy?

Is it safe or possible to get pregnant if you have an ovarian cyst at the time? my friend had a cyst and is now wanting a baby, however she doesn't know if the cyst is gone. If she quit taking her pills 2 weeks ago and had a normal cycle on 4/4 she would ovulate on the 18, she has a sonogram on the 25th, will it show if she concieved, how likely is it for her to even get pregnant if she still has the cyst