H E L P !

1yo. typically wakes once per night for a bottle. Lately, she has been waking up and crying randomly through the night. The bottle doesn't work and she is comforted by us only till we place her back into her crib. Sometimes she'll fall back asleep other times she will just continue to cry. We've tried to let her cry it out, but after 10 minutes of crying we ourselves want to go back to sleep so we go comfort her again. Any idea as to what might help? We've tried tummy drops, leaving a sippy of water in the crib, pacifiers, taking her clothes off, changing her diaper... Not sure what more to do. She will even be laying down and still cry.. Like she isn't sure why she is crying either???