2.5 weeks post LASIK, I have sudden onset of extreme light sensitivity and feeling of foreign object. Is this normal?

Had successful LASIK surgery 2.5kwks ago. 2 days ago I noticed first thing in the morning the light was just too much for my eyes. Also had sensation of something in my left eye. Strangely,symptoms will be around for 2 hours and suddenly go away and I'll be normal again with no complaint. Again suddenly it'll happen and my eyes will water and get sensitive. Dr said to start the steroid drops again and look for improvement. He also stated something about rebound tenderness?