I have just completed week two and have yet to have a bowel movement. Day 4 I passed this yellowish liquid and haven't had any other "activity" since then. I'm drinking my protein shakes, getting in about 50 grams of protein per day and trying to drink as much water as possible. Anyone experiencing anything similar?

This is very typical. There isn't enough solid material in your stomach to pass much of anything. It was 10 days post op before I had a bm. I read recently from another member here that 12 days had passed. Some take Mirilax, others eat chia seeds, some take stool softener. You may be too early out to take some things so please discuss this with your surgeon or NUT. I have never been very regular and it is even worse now. I hadn't had a bm since before Christmas and have had to taken Exlax for 3 days straight before I had results.