However, I think a simple statement of, I won't be calling and checking up on you, but I get anxious if you are late and would appreciate you choosing to update me" is not unwarranted.
Excellent advice, Michelle.
Also, as Dr. Shirley Glass says in her book ("Not Just Friends"), tell your H that "it's not fair to create worry." I wouldn't tell him that you worry about him being with someone else. Just that anything could happen, you know? He could've had an accident, a flat tire, anything.
You're doing well, Sara. Hang in there.
Getting over a painful experience is much like crossing monkey bars. You have to let go at some point in order to move forward. ~ Joseph Campbell