Speak to the quack. I had a similar problem with blood pressure tablets. Interesting that the best stiffie I had was while I was telling her about my erection problems. I tend to avoid wanking and porn for about a week before a punt and if it doesn't get hard enough for penetration I will still have fun. Can cum with a semi hard cock and abstaining for a week means I have a bucket full of jiz to dump down a throat, over a face or tits. It's still fun if you have a good connection with the girl. I'd she's a good WG, shell understand and still make the best of it. Good luck, but speak to the quack.