Prolactin?

Hey guys! I went to the doctor back in August about my weight and after a long conversation with my GP they decided to do some blood tests. At the initial blood test in August they found out I had PCOS and that my prolactin levels were slightly raised (581) so I went back about 3 weeks ago for another blood test and my prolactin levels are now 721. I've been researching it a little but I'm still not sure I understand what this means for me from here on out. I've been referred to a endocrinologist and I think they want to check to see if it's being caused by a hyperprolactinoma? Basically should I be really worried? How will this affect my fertility on top of the PCOS? Can it be treated with medication? Tia xo