You could always wear smaller jewelry through earskins. I do it all the time! I don't know if 10g will fit into 8g, though. I've never tried jewelry that was only one size smaller.
Also, if they're really heavy, you may wanna wait just a little longer to wear them. Just try them out for a short period of time at first to see how they feel. Anytime I wear heavy hangies out of the house, I always bring a pair of plugs with me, just in case they get too heavy for me. Just a suggestion.
*Elizabeth.
"Love of mine, someday you will die
But I'll be close behind
I'll follow you into the dark"
-DCFC