Is it normal for my eyes to feel heavy/pressure 1 week 3 days post LASIK? My eyes didn't start feeling heavy until yesterday?

I don't have any blurriness, and everything has been seamless so far, but yesterday (1 wk 2 days pos-op) my eyes felt very tired which in turn made me feel tired. All day today my eyes have been heavy and tired and feel a little scratchy which they didn't before. I had a followup yesterday and my doctor told me my right eye was dry, and heaviness is a symptom of dryness, but is it concerning that this is just arising over a week post-op and wasn't a problem before? I was -8 in both eyes.