Confirmed osteoperosis

my dr called me today, lol, suprisingly because i had talked to him the previous day about my mdd and suicidal thoughts, and today he tells me that the bone density scan that i took a few weeks ago turned out that i have osteo, my dr said and emphasized that i have VERY thin bones.
i asked him if this somewhat common with my age and sexual orientation, and he said its very uncommon, which made me worry more. i have mdd and social anxiety, i believe its more severe social anxiety and i feel like i should be concerned that this is happening to me. ive always played sports, been in good to moderate shape as of late, but i guess that never mattered?

ive already seen an endocrinologist about it and he wants me to do another blood test but i have a low level of testosterone, which i have no idea how thats possible, they gave me vitamin d pills.

my dr rxd me today fosamax 70mg, once a week and vitamin d 2 pills a day.
will it help? i know it sounds like im sort of hypochondriac or something but recently ive been feeling back pain last couple days, im not saying anything is wrong, but who knows now.
ohh you should know how i got my first fracture, a vertebae non traumatic compression fracture of t9, this happened by waking up from a nap and getting up, this was august last year. im worried if i can fracture a bone that easily, what is it going to be like in the future?? should i be concerned? please, im desperate for answers