Delayed ejaculation. 25-year-old man. Not the most sexually experienced. Taking long (40 mins+) to finish or not finishing at all with my new girlfriend. I get anxious when I notice that it is taking a long time, we have had sex a handful of times and I have only finished twice via oral. I am concerned there is a bigger issue here. I don?t want my girlfriend to have to put in extra effort to get me off, after she is already finished and tired. Could this be due to my previous porn use and masturbation? I have since stopped looking at porn. Is this worth talking to a Dr. Could my lack of expire eve with real women be at fault? Could marijuana use cause these issues?