Sleepless Nights

Lately Presley has been waking up in the middle of the night and screaming...LOUDLY...for anywhere between 15minutes to two hours. There doesn't appear to be anything wrong with her, no real tears. When you lay/hold her on your chest, she seems content but then starts squirming around, moving her head side to side as if trying to get comfortable. Just when you think she has fallen asleep, she starts wailing again. I have tried giving her a little bottle, but when you give her a bottle (day or night) she starts screaming when you take it out of her mouth. I really don't know what is going on with her, as she does this during the day sometimes as well. She used to be a great sleeper! Her crying is definitely taking it's toll on me both during the day and at night. My friends from high school, Andrea, Pam, and Melissa came in town this weekend while Kyle went to Midland. Instead of being able to enjoy my friends' company it turned into a babysitting job for them. They were up helping me in the middle of the night, and since I was already tired from the previous week's sleepless nights, I took naps during the day and didn't get to spend a lot of time with them. I know they were happy to help, but I still felt bad. Has anyone else experienced this? Of course everything is compounded when you have Marshall who decides to cry at nap time too sometimes.

This has been going on for almost a month and I am at a total loss as to what might be the problem. Please, Please, Please, pray this ends soon!