My husband has been taking Mobic for some time 7 or 8 years. His doctor told him he could take an extra one in addition to the one a day he was taking if he needed it. He went for a check up and had blood work done Monday. They called the next day and told him to cut his Mobic to 1 every other day and that when they could set up a hepatic ultra sound, they would be in touch. This, of course, frightened me. Is this serious???