OMG. Kill me!

Today was day #4 of LO (14 months) getting up at 4/4:30am and not going back to sleep no matter what we do - rock, soothe, nurse, CIO. We gave her Advil last night thinking it might be molars but she wakes up screaming the same time every day. We are about to lose it.

I don't think this is the 18-month regression yet? Could be teething? HELP. When will this pass??