I have had 2 resections - the first one was similar to yours and I remember it taking some time for my system to settle down after such a major disruption. One thing that has remained constant is the explosive diarrhea - the doctors explained to me that this is because the bit that had been removed usually recycled bile salts which break down fats; because this bit is missing the recycling is less efficient and so every now and then I continue to have this problem - though I am now doing lower fat diet and not having any problems so far. My most recent resection was in March and I haven't got much small bowel left so am trying fairly low fibre diet as well - balancing act as I now am suffereing more from C than D!!
hope i've helped - it takes months to recover so don't expect too much too soon; if you're anything like me I'm anxious about anything going in my body unless I can be in control of the outcome but it's got to be done
Penny x