Plugged Ear

I've had one of my ears plugged with wax and went to my doctor's office to get it cleared out. The Nurse practitioner got the wax out but she said there is some fluid behind my ear drum.

Of course my ear did clear a few days before my appointment but the wax was still there. So Now that she messed with it it's plugged again. So she has suggested taking antihistamines for a few days and some medicated nose spray. Man I hope this clears it up.