It's not unusual to think of suicide now and then, just don't let yourself act on it.

I suggest you talk to your mom about how what she's doing is affecting you. Tell her you'll be fine making your own choices.

I haven't found the cure to depression in my travels... I still don't feel 100% happy. All I can say is a quote, something someone told me at a party the day after my ex broke up with me and I was really down, "Act happy, if you act happy, people around you will be happy, and then you'll become happy." That works for me, helps a lot.

On top of that you have to spend time with friends and get out and do things. I I'm extremely shy, and I get panic attacks when i'm around a lot of people. This lead to me isolating myself, rather than face the fear (agorophobia). In 10th grade I met some great people and I started hanging out at the mall and going to parties, albeit I was still socially awkward, I still had fun.