Is there any way that I can get my rating back to what it was before the forced loss?
NO, but since you just joined 5 days ago this doesn't strike me as a really important issue. As far as how long you'll be banned for you can contact the staff directly via Help & Support at the bottom of the page
BTW I think they use "auto-detection" software here for cursing, racial slurs, etc so watch out!
I just recieved my first loss in standard game after I got kicked for cursing. I admit that i had typed out a vulgarity, but after I had recieved a warning I stopped typing in the chat immediately. Even so, I recieved a ban a short while later despite not saying anything in chat in fear of being banned. Furthermore, the vulgarity wasn't used in an insult, and if you check the chat I was actually having quite a nice correspondence with my opponent. Other topics said that it was going to be 30 minutes, but I've been banned for hours now. Is there any way that I can get my rating back to what it was before the forced loss?