Over-processed hair help-in dire need?

Last week, I had a Hair Relaxer put in my hair. I left it in for a little less than the recommended time, because i had dyed my hair black about a month beforehand. I thought it would be fine because the box said not to use the relaxer if i had dyed my hair less than 2 weeks ago. well, my hair started FALLING OUT in the shower as i was rinsing it out. and i didn't freak out at first, but then MORE started falling out. by the time i was done showering, a lot of my hair had fallen out. it's a wonder i still have any hair at all! but i trimmed it afterward, and put some conditioner on it. nothing made it better. it has been days and i still see little difference in the feel of my hair. the breakage has almost stopped, but my hair still feels really gross. i havent applied heat or anything since it happened. i have tried hair lotion, grease, nexxus split end binding stuff, even a henna'n'placenta treatment. none of it has made much of a difference so far besides the breakage stopping. what can i do to help my hair get stronger and healthier again? I'm so lost!