In my opinion if you know your stuff then it doesn’t matter if you have no degree. This profession was built on those just like you.
Depending where you are an entry level Graphic Designer w/degree can make from 26,000 to 32,000. I wouldn’t expect much less than that for one with out a degree. Designers get shafted on pay no matter what so don’t budge to far or you’ll be expected to budge the rest of your career.
The only thing that is different between a Designer with a degree and one without is that the Designer without will need to have a stronger portfolio to show then a just graduated one. That and maybe a entry level designer with a degree might have more in house experience than one without.