Hi l am a 48 year old male. Recently l have been getting a slight pain in my lower left abdomen , but l only get the pain when l am in bed at night and not during the day when l am up, For example l had the pain this morning when l woke up but once l got out of bed it went away also when l urinate at night l think the pain gets better. Do you think you can guess what it is, l am hoping it is not some form of cancer, do you think that would be unlikely