I'm 5 Weeks Post Op On The Right Eye, Two

I'm 5 weeks post op on the right eye, two weeks post op on left having had cataract surgery. The right eye (5 wks.) has excessive watering, and scratching. It feels like a eyelash or speck of dirt is in it. Is this normal. My Dr. feels it might be dry eye, or allergy...He wants me to use Bepreve ophthalmic drops.?? I'm using them, but see no improvement. Will see him again in three weeks. Just would like another opinion. Thank you.