welcome to YT!!
I don't think you will be able to change your user name to luvmyyorkies - as there is already a member with that name. Maybe you could change it to luvmy2yorkies or something else - but the bad thing is you have to totally start over.
But if you're going to start over, sooner is better than later, because you don't get to take your posts with you.
Or leave it be
Can't wait to see pix of all your furbabies!!