Low Estrogen levels

Meryl
So I just recieved bloodwork results back and my doc says my estrogen levels are low so I'm probably not ovulating but I have been getting positive ovulation test on cd 13-15 normally....So are the test wrong or the doc? I'm confused! I also just found out about possibly have a 10cm cyst on my right ovary so maybe it's not functioning & the reason my levels are low..?! I'm sooo STRESSED! Have this happened to any of you?????