DJ - sending butterflies to him right now so he has a safe return, and to you to feel calm and trusting of the universe. It's so difficult to be worried about someone you love and have them not listen.

Do you ride? Do you two ride together? Can you fit it into your schedules so you can ride with him on shorter rides more often - maybe do the gradual build up together as an activity, and not even mention what your goal is? Have you talked to him about your concern? It's possible that a loving DH may ignore all the advice in the world from his family, but when his beautiful wife tells him she doesn't want to be a widow, it may melt his defences and you might talk him into having some tests just to reassure you.

Hugs and butterflies,
~T~