Never reported PayPal earning from 2014-2015. Didn't know it was SE tax and whatever earn over $400 need to be reported. Can I amend my 2014 and 2015 tax return in 2019?

Hi guys,

So, in a huge problem, I think there is a chance of me being audited in the future and to make things right before the audit, I want to pay all of my due taxes and come clean. 

So as the question asks, I have an earning of around $7000 in 2014 and $10000 in 2015 that I never reported from PayPal since they didn't issue 1099-k but I later realized it is my obligation to report all my income whatever I make and it is considered self-employed income. So do I still have a chance of amending my 2014 and 2015 tax return to include this SE taxes? 

Any help would be appreciated and thank you for helping.