For the last couple of days I have had pain in my tailbone. Not really bad, but just a dull ache, and not aware of it the whole time.
I do suffer from a bit of health anxiety, so always imagining the worst.... I am not pregnant and have not had any injury to the area. I never think "it's just an ache, it will go away..." When I get any pain I always think "it must be cancer/heart attack/etc". 
I do get a bit of IBS - could it be related to that somehow?