Xp:Venting...

What crappy night I have been having for the last week with my 10 week old DD. She has been reverting back to newborn night time sleep waking every 1 to 3 hours during the night. I don't understand???? She has been an excellent night time sleeper since 7 weeks only waking once in the night for a feed. But just all of a sundden since Saturday night she has been wake 3x in the night. I feed her the first wake because it usually after the longer stretch 4 hours at wich she used to go 6 hours. I will change her at that point too so she has a nice dry bump for the second half of the night. So full belly, dry bum, no gas, what the hell could it be ???? So confused and frustrated. The only thing that has changed in the last couple of days is she is trying to lean forward to get to her toes... I don't know if learning something new would change her night time sleep? She is also a cat napper during the day my Dr. Reasures me this is a phase at which she will outgrow and I have tried to stretch them out but it just won't happen, so I am not sure if the short napping has anything to do with it. Well I just needed to vent, can vent to DH as he is not being very supportive in the matter.