No, discharge and spotting is 100% NORMAL on all forms of hormonal birth control.
YOU ARE NOT PROTECTED ANYMORE!! Absolutely do NOT have unprotected sex!!
You should be okay from the same night you threw away the ring. It's not a great circumstance, but you *should* be okay. Personally, I'd go buy Plan-B just in case, to keep your body from ovulating.
I'd go buy another ring while you're at it, too. You just wasted a lot of money.