(((Barb))). I remember those anxious nights. They s*ck. First off...I would stop looking at that tracker if I were you. Honestly...unless you are using it to investigate the OW possibility, I would absolutely turn it off and forget it exists. It does nothing except cause you to spin and imagine worst case scenarios.
My two cents on the possibility of an OW. I would assume there is one as there usually is. Men don’t tend to leave their homes unless they have somewhere to go or someone to go to. My XH swore up and down on our children’s lives that there was no OW and I asked him MANY times. He told his mom the same thing...numerous times. He was lying. Like most of these guys, they want to do the crime but don’t want to do the time. They know it is wrong and that others would judge them for it so they lie...to EVERYONE. If there is someone else, you will find out eventually anyway. They can only hide things for so long.
Others may think differently but IMO your approach doesn’t change. The things you are doing are for you, not him. Detaching, GAL, 180s... are for you so you can emerge from this okay regardless of the outcome. Treat him like you would a neighbour. Be polite and friendly but not over the top. Be as busy as you can be. The friendly neighbour approach will feel forced at first but eventually it will come more naturally to you. (((HUGS)))
