A dad has been told he has only 15 months left to live after headaches led to a terminal brain cancer diagnosis. Self-employed groundworker Rick Smith began suffering from chronic pain in February but after only a month of issues, he has been told his condition is terminal. Fiancé Katrina Binfield said: “He started getting constant headaches for a couple of weeks. “We thought at first it may have been a virus. I was ill just before but his lasted longer than mine. “He is a hardworking man and never takes time off, but he was starting to call in sick and just sit around the house. “I said to hi…