Until such time that you CAN settle down, and get yourself on more of an even-keel emotionally (and this is NOT a knock, E -- just an observation), I do NOT think you're ready to see/hear any of this.
You have enough evidence already anyway -- just go on, as someone else suggested above, operating under the assumption that she IS having a full-blown PA with the guy, and plan accordingly.
Once you settle down more, and the meds kick in (mine took about 2 weeks), we can consider it some more. If your state is a "fault" state, where infidelity can be used as grounds for a potential legal action, then there's some merit in having some more iron-clad proof. But if it's a "no-fault" state, and your atty tells you that it really makes no difference in either alimony or custody, then it may not be worth the blow you're going to take emotionally to see/hear all of it.
Just get with a good atty for now, preferably a good family law attorney who specializes in "men's rights" and paternal custody issues, and find out what your options and rights, etc. are. Most people find it very comforting to be briefed on that stuff. I know I did.
