I was on it and did experience bad stuff if I misssed a dose - it doesn't take much to experience withdrawal - mine usually involved bad palpitations.
Venlafaxine is not a drug to be messed with - can you put your tablets next to your toothbrush to ensure you remember to take it?
Just to make you aware if there comes a time when you neeed to come off venlafaxine ensure your team do it properly - mine didn't and I had some horrible physical side effects. I finally felt normal after 6 months!!!