My battery stopped working, and other issues

Hello again,

I have some problems with my MacBook Pro (mid 2012):

- Battery stopped working and is NOT detected by the machine;

- One side of the trackpad doesn't click and is very sensitive to the pressure (sometimes clicks randomly) 😠

- System preferences tell me that there is no trackpad but my trackpad works (not fine but works)

- The DVD reader takes the disk, Makes a weird repetitive noise (like tutum tutum tutum...) and ejects the disk.

Do I have to take an appointment to the Genius Bar immediately? Or is there something I can do to fix some/all the issues?

Thanks! 🙂