I have 5 dc's, 2 from xp and 3 from dh, we are expecting#6 in the new year.
I got pregnant, (planned) with our first, (my 3rd) dc when we had only been together 6 mths, I suffered very badly during early pg which progressed into bad antenatal depression, dh didn't understand and instead of pulling togther we pushed each other away, me doing most of the pushing if I'm honest.
During this time when I was about 7 mths gone, he stayed over and about 2am in the morning his phone bleeped, Yes I opened the text and read
" am in Chicagos, feeling very young, wish you were here" from his pa
Obviously I checked further to reveal what I believe was an affair, no outright comments but enough iykwim. Text messages starting at 7am and lasting all day until about 2am regularly.
I stayed up all night fuming but not brave enough to say anything, I deleted the latest text,
I never said anything to dh at the time and we got married 3 yeays later, but I have to say it has eaten away at me for all of this time and to this day I still will never forgive him for it.
What I did do, was reassess my situation, and take back control, I gave him no opportunity to be away from me, involved him in every way with the baby and pushed her out by going to his office regularly with my newborn baby and taking him to lunch etc.
I mentioned it about 2 yrs later in a round about way so that he knew, he didn't say anything so I knew I had been right.
I wish I had said something at the time, i wouldn't have wasted all these years toturing myself about what, where, when etc
You are number 1 in his life, he has comitted to you and he owes you an explanation, do not be afraid of his reaction. Be braver than I was. Good luck