Frustrated

So tomorrow will be 4 weeks post op, and I am at a big time stall. Haven't lost any weight since around day 12. only weighting once a week but when i do its the same number. I know not to compare to others , however considering I am on the heavy side i thought i mite loose faster. In the first 12 days i lost 20lbs , now gained 2 back ?????? what the hec ??. I get plenty of protein daily and and doing great on mushies. any suggestions , I feel like i lost more when i was doing it on my own (fyi lost 73lbs pre op) Is this just a stall or should i be concerned ?