The pain in the shins is an innevitability. It will hurt every time you throw a kick until the nerves are deadened. Assuming you throw kicks every day, it'll be about 6 months to a year before it stops hurting completely. But even then it will still sting when you check a kick, or get checked, but the pain will be marginal at best.
The stinging pains are just one part of the pains any dedicated fighter has to deal with, the others being arthretic symptoms in the bones and joints, and muscle aches.
Sig courtesy of that photo-matic magician limba
I went out the way that I fight. I went out on my shield. That’s it. Done. --Chuck Liddell
My goal is to end my opponent --Carlos Condit