Will tanning for 3 months a few times a week have a lasting effect?

First off, I've looked up some similar questions on this site before asking myself. In all of them, however, the only answers I seem to find are just people lecturing the "askers" on how tanning beds are for their skin. I know how bad it is. And I have stopped. I'm just worried if I have done a whole lot of damage to my skin, about aging prematurely mainly. I went for a total of 3 months on an average of 2 times a week. Is this going to damage me all that much?