High prolactin

When I was trying to get pregnant with my first baby my doctor found high prolactin levels in my blood which can hinder fertility. She prescribed cabergoline. Within two months of taking the meds we were pregnant. She thought the high prolactin levels were due to my high activity levels. I’m still active, but less active this time around. I’m wondering how long we should try for our second baby before I go to the doc for the blood test and the prescription. Anyone else have a similar experience?