ROTH Contribution Question

Hello,

 

If I were to have a w2 for 50k, and a schedule C loss of 55k, can I still contribute to a ROTH IRA?

 

I have FICA taxes paid on the W2 income, so I am thinking maybe that still constitutes earned income available - whereas the Sch. C loss never had FICA taxes taken from it.

 

Also, if you can provide where you found the information, I would appreciate that, so I can read up on it.

 

Thank you for your help!