HELP! going to the doctor questions

I’m 17 and on Tuesday I’m going to the doctor to test if I have anxiety/depression, get on birth control, and take the chicken pox vaccine. And I have so many questions!! If you can answer any of them PLEASE comment below I really need help! Please don’t judge me.

1. What should I expect for when a doctor tests to see if you have anxiety or depression. Is it just a written test they will fill out? What questions will they ask?

2. Does my mom have to be In the room for all of this? Can I kick her out?

3. I have self harm scars on one of my arms. When I get a shot or get blood taken can I ask them to do it on the opposite arm? I don’t want my mother seeing the scars.

4. Should I be worried if I smoked weed a little over a week ago?