I think it is only called MHMR in Texas but it was worth a shot. Try looking in the phone book for something under the yellow pages along the lines of "mental health services" or something similar or try Googling various things such as "mental health treatment centers" along with your city and state in the search.
Yes, there is a way. Google free or low cost mental illiness assistance in you area. You may try MHMR Mental Health Mental Retardation for your area. You can usually get medical services at a reduced rate depending on your income level.
I don't know if you are Bipolar but there is something going on b/c it is not normal to be thinking about killing yourslef and that is something to be taken serious. If your thoughts continue you will need to get help rather you parents find out or not. I'm sure they would want you to go for help immediately if they knew how you hve been feeling. If you get in a crisis state regarding suicide, I urge you to go to the ER and tell them you need help because you are having suicidal thoughts.
Please get some help.