How should I play this?! I'm dying to say something.

I've been tracking my husband's phone because he's been caught having an emotional affair with this women he used to work with. There's been nothing for a couple of months but I track his phone anyway because I just had a gut feeling he wasn't going to stop.

Today all of a sudden there's a phone call. The first thing she says is to delete the number once their phone call is done, and that's also the last thing she says. She says she's going to be at the shops at this time, she's not going to touch him or anything and she doesn't look pretty today and my husband asks her if she's wearing pants or a skirt and he's like cool I'll see you. I look at his location and look and take a screenshot that he's at the shops by her.

I'm not one who can play things cool. I wear my heart on my sleeve and as it is, I'm dying not to phone him. But I want to catch a few more phone calls first. I was thinking of saying that someone I know phoned me to say he was at these shops with a woman. But I'm wanting to hear more conversation between then. I'm shattered because this may be why my husband said he doesn't want to try for a baby anymore.

I don't know what do you. Catch it now before it becomes anything more or wait for more phone calls? I'm no good at this!!!!!

UPDATE: I asked him, and he said no he wasn't with anyone. He's telling me he was somewhere else. But I know that's not the truth.

UPDATE 2: I asked when was the last time he spoke to her and he said yesterday because he had to call there for something work related. I did see a call come in but I couldn't hear properly who it was for but I did hear it was work stuff. But he's lying now.

UPDATE 3: He's told me he changed his mind about having kiss because he's be a bad dad (he's actually great with kids) and I never want to have sex anyway (lies, we did it three times during my last fertile week).

UPDATE 4: He has conveniently changed the conversation to our lack of having conceived thus far, and has not responded to my messages for the last half an hour.