dear doctor i am 58 years old have cancer on the lung and main arteries ive had it for ten years haveing it cut down twice . however its still there 7 cm so i was offered radiotherapy last year and had it and feeling good at the moment although its not shrunk or grown i am also on warfrin 3 mg a day .my question is i have not had intercourse for about 3-4 years and lately just found a partner each time we have intercourse i bleed and find it uncomfortable this happens every time . could it be the warfrin or because i have not had intercourse for a long time please advise . i am 5 3 in height and weight 7. 3 stone thank you miss campbell