Anxiety, Brain tumor scare

I went to the gyno about two months ago for some issues with my period. I was having clots the size of golf balls and I was losing so much blood I felt ill. The doc did some tests and found I have extremely high insulin levels and moderately high prolactin levels (the hormone for milk secretion when pregnant). I’ve been referred out to an endocrinologist because the gyno thinks there’s something wrong with my pituitary gland (she checked for PCOS) but my appointment isn’t for another five months. As time goes on, I’m having more issues that add to my anxiety. I had dried milk on my nipple a few weeks ago. I haven’t had a period in two months, I get spotting of reeeaallly old blood but that’s it. I don’t even need a pad for it. I get headaches a lot too. Basically I’m stressed not knowing if I have the presumed tumor on my pituitary gland which is called a prolactinoma. I’m 19 and feel too young to be dealing with this kind of stress. Given, these tumors are generally benign. Do y’all have any tips on coping with not knowing or any cancer/tumor stories of your own?

(Also, I was checked for PCOS, thyroid issues, diabetes, basically any other cause of these abnormal test results and they were all negative)