It's too late for that. Take it as a lesson to ask for what you are worth. I think we've all done this at some point in time. At one company, I was getting p

It's too late for that. Take it as a lesson to ask for what you are worth. I think we've all done this at some point in time. At one company, I was getting paid $75K. Years later, I found out that my co-worker (who was essentially hired to do the same job as me), was only getting paid $42K. I now have strict minimums on my salary requirements and won't go anything below it.