Noticing new, possibly dangerous finasteride side effects

[25 going on 65]

At first I thought it was my imagination, but I just can't ignore this any longer...

When I get out of the shower, I am unable to see as much scalp as before I started the drug!! It's like there isn't as much skin on top of my head or something. I grabbed a handheld mirror to look at the back, and my heart skipped a beat: the size of my crown has definitely gotten smaller. Where I used to have a circular area of thin translucent hairs, I now see mostly darkness!

I've done some research on the internet, and it turns out there are all kinds of people reporting the exact same thing. Definitely far, far more than Merck would want us to think!!
I'm freaking out. I have been a routine defender of this medication; now I'm thinking I should have listened to others' warnings! I want to make an appointment with my GP but he isn't available until later this week...

I have never heard of anyone experiencing this on beta sisterol or saw palmetto, so I'm considering switching over to them and seeing if these sides disappear. Any thoughts???