Why am I up you ask??!?!

I'll tell you why.....for the last 2 nights Alexa has started crying and wont go back to sleep. Up until now she has been sleeping throught the night 9-12 hours for almost 8 months......what's going on you ask...........TEETHING! She has a molar coming in on her right bottom side for sure (I can see that one) and I don't know if there are any others. She wakes up in pain (I guess) then cries.....and cries....and cries!! I gave her pain killers, but she just wants to be up. I'll give her an hour, then its back to bed crying or not. uggghhh!!!