Hello, Thank you for writing to HCM, Tiredness after intercourse, masturbation is normal thing nothing to worry here. I had gone through your query and would like to advice you that as you mentioned you have three child so there will be definitely some level of tiredness you will feel after intercourse as your age might be issue. I would also advice you that try different positions while having intercourse because same position in intercourse may occur some problem for back pain and all. With the use of different positions you may have more pleasure and also more satisfaction and might have solution of your query. may be its nothing to worry but still if you had any query now than you may concern a good doctor they may suggest you better after physically checked. Hope you will find it helpful. Thanks & Regards, Dr. Gaurav Prajapati