You are not wrong to want to know what happened. However if you trust your husband you have to be willing to accept the answer. If you are not sure, then this suggests that you are worried about this and your relationship. Nevertheless you are entitled to know. If he did take off and didn't return for 5 days, this at least suggests that he has no respect for the relationship. This is dismissive of your feelings and seems that he can at times be selfish. Get to the bottom of this incident.
If this has been helpful press accept