it sounds like you've been able to receive low-cost care through a community based health clinic. if you're income is low enough you'll likely be exempt from a tax penalty if you choose not to buy insurance. anyone who can't find a plan costing less than 8% of their annual income needn't buy coverage. but you'd do yourself a favor by going online to healthcare. gov or talking with someone at the clinic about your insurance options just to check out what's available to you. there's a very good chance you'll qualify for either a subsidy to help you buy affordable insurance or for medicaid if your income is low enough and you live in a state expanding its program.
do i have to get obamacare if i am on a sliding scale with the county for medical/dental coverage?