If you have a Form 1040 or Form 1040-A as your main form, see if the box on line 6a is checked. If so, you are not filing as a dependent (i.e. you are claiming yourself). If it is not checked, you are filing as a dependent, and someone else can claim you.
If you have a Form 1040-EZ as your main form, see if the box on line 5 is checked. If so, you are filing as a dependent (i.e. not claiming yourself).
Your Form 1040 will be included in your 2016 tax return. Here's how you can download/print your tax return filed in TurboTax Online:
I don’t even have a line 6a? I think I filed as independent, but I didn’t get a stimulus check, so I’m checking to see.
The question about whether you can be claimed as a dependent is on the Form 1040, directly under the Address section. It says: Someone can claim (box) You as a deduction. If the box is checked, you are a dependent. If it is unchecked you are not a dependent.