Firstly if you are concerned, seek help via Optician.
You could have dry eyes which are iritating you and it is just by chance you have had a recent visit to the DRS.
The Glaucoma type you were warned about is acute angle closure glaucoma. When this happens the presure in the eye rises rapidly and you will most likely have a painful eye, headaches, feel sick or actually be sick. You can also have mild attacks of sharp stabbing pains in the eye that come and go. The drops you are given can cause this type of attack, as in some people they very rarely can cause an increase in presure.
As the above post says its highly unlikely the drops are still having an effect as they wear off after a few hours, you do get some drops that last for a few days however (cyclopentolate) but it is unlikely you will have been given these.
I doubt this is what your experiencing
Obviously if you are concered, you should go see your Optician as they will be able to tell you there and then if there is a problem, and then they can refer you to an Eye clinic if needed.