sorry to read about your struggles, it does sound rough.
what did your parents say when you asked them about seeing a therapist?
maybe if you're slightly closer with your mum (or dad) you could talk with them in private and have a heart to heart about things.

the positive thing though is that you have a job and are in school, sometimes you just have ride out the storm and things get better when you have a clear path to follow.

hopefully things get better if you can have a heart to heart with a family member, also maybe your doc can help? they can recommend for you to see a therapist.