Just scared

Hi so I am referred for a ultrasound as I have constant petiod like cramps for two weeks and needing to wee more.

my ca125 tests are normal but I am so scared ad they think it's a cyst, but been reading thay cysts don't cause pain only if they are cancerous and just scared.

Anyone had this kind of symtons and  for it to be just a cyst. 

Sorry for panicking