I was on Venlafaxine (112.5mg) daily for the last 8 months. Last week I was finally off my meds and it's a great feeling! However I am experiencing some side effects (withdrawals?). I'm way more tired than I used to be and my appetite has increased. When I was on meds, my sex drive was very low, and I masturbated maybe once every 10 days. And it took me a long time to cum. However now, I am done in about 4-5 strokes. While I enjoy finally making myself cum to the full extent, I am kinda worried about how easily and early I finish. 

Anyone else experience this too? If these effects went away for you, how long did it take?