Welcome to the party, Fillipe! Try the punch.
Don't be shy getting those short stories out to publishers. You never know what will come of it. It still amazes me and seems very surreal that I managed to get all my stories published in various 'zines and anthologies. I even managed to win a couple of contests and make a little money as a result. I'm not bragging (Yeah, right! Show me a writer who doesn't. lol), just relating my experience thus far.
As far as novelettes...well, they CAN be a tough sell in my experience. Correct me if I'm wrong, Water Cooler denizens. It never hurts to try selling them to pubs who accept novelettes, but while you're waiting to hear from them, you might want to consider expanding on the stories. Just my two cents.
- Dave