You're still healing inside. It took me until month 4 to feel human again.
Make sure you're following the diet and exercise guidelines:
liquids for 2-3 weeks
soft foods 2-3 weeks
slowly introduce solids leaving raw veggies, soft breads, and steak for last around month 3 or 4.
Don't lift anything over 5lbs for six weeks, then slowly add more each week until you feel no discomfort.