It could be anything from what everyone has mentioned previously: dehydration, too close to post op, too many times in the bathroom to lack of sleep, anemia, PTSD ( face it, this whole journey is traumatic enough without having to poop 23xs day, accidents, exhaustion ...)and PTSD can throw your system off dramatically leading to anger, exhaustion, sleeplessness, lack of appetite etc...and then there is thyroid which can cause the exact same symptoms so no matter what is may be, you should start with a phone call or visit to your doctor and some bloodwork...in the meantime, try not to put too much stress on strain on yourself or your system, see if you can get some good quality sleep and some basic suppliments if you are not eating enough...
And know that things usually slow down as time goes by.
Sharon