I have noticed that the obstructions are not as intense as they were 2-3 months after my 2nd step surgery. I am now in my 10th month after, and this is my biggest problem. I just lie down and watch the intestine swell up and bulge out at the site where my bag was. After about an hour I'll hear and feel a pop and the food will pass thru the area of the blockage and then all is ok. The fact the blockages seem to occur mostly on the weekends makes me question your lifestyle changes on the weekend or any dietary changes.
Some people do mention minor discomfort in the area where the stoma was located.
Because this portion of the bowel is not in use for a few months, it can lose some of it's tone. During this time there may be some alterations in this segment of bowels' ability to move food smoothly forward towards the pouch. This may be part of the reason that you've had some what sounds like partial blockages. This motility improves with time. It sounds like you have experienced some relief already.