Mumsnet hasn't checked the qualifications of anyone posting here. If you have medical concerns, please seek medical attention; if you think your problem could be acute, do so immediately. Even qualified doctors can't diagnose over the internet, so do bear that in mind when seeking or giving advice.
Good luck to both of you. FWIW, my dh had a lump investigated 10 years ago which was completely benign, and hasn't had any problems since. He does however have a cute little hairless scar (that is probably way TMI)