First of all, congrats on paying off your debt. That is a huge step.
-$1900 in a Roth IRA that I started in January. It's with Edward Jones, and I'm making monthly payments to max it out this year. I have NO 401k plan with my job, so I think that this is my only option for retirement savings.
Did you make the $1900 contribution for 2013 or 2014? If you made it for 2014, ask them to re-allocate it to 2013 so that you can have a fresh $5500 to make out on.
Next, start building a financial education. You can ask for advice on here all you want for what to do with your money. However, knowing what and why you're doing something will go much further.
I highly recommend reading this for financial education:
http://jlcollinsnh.com/stock-series/If your employer offers a 401k plan, definitely contribute to that - especially if they match (free money). Other than that, a Roth IRA is a good option. As you will read in that link, Vanguard is a great company because they have such low fees!
Remember, the numbers do not lie. You are not as far behind as you think.
Refer to this calculator:
https://www.investor.gov/tools/calculators/compound-interest-calculator#.U2hJ8PldVmACurrent principal: $1900
Monthly addition: $458 (which is 5500/12)
Years to grow: 30 (which would put you at 63 years old)
Interest Rate: 6% and that is being conservative
Compound Interest 1 time per year
Future Value: $445,416.42