Hi Lostandshocked. First of all, I'm so sorry that you're going through this. I can relate to you on many levels and I'm sending you all the love and strength in the world right now.
I have a 10 month old baby and found out about my partner cheating 5 weeks postpartum so my baby was tiny.
It was easily the hardest thing I've ever had to go through with hormones still raging, trying to figure out how to be a mum to a newborn and it sent me into postpartum depression. I had to, in the end get support from my local specialist mental health team (they helped me so much to manage this, particularly postpartum rage I felt). I was really not myself and that whole time is such a blur. I thought at one point that I wasn't going to make it, I was suicidal.
But I'm better now, although not over the affair fully even 9 months post D-day. It's a work in progress. We are still together and working on it every day.
What I want to say to you right now is that, as hard as it is right now, you need to prioritise your mental wellbeing over everything else including your husband because all your babies need you. You are in such a vulnerable position being pregnant, with hormones doing their job and this revelation affecting your mental state. My advice would be to reach out to a mental health professional specialising in antenatal care. Don't try to do this on your own, you deserve support. You haven't done anything wrong and please don't be ashamed to speak to people who you trust. If you don't want to speak to friends or family, honestly a professional is a good choice as they are not personally involved in your situation and the support will be confidential. Maybe you can talk through some of your thoughts and feelings and over time make a plan.
...but don't force yourself to make a plan right now. You've only just found out and it's a shock. You don't need to know whether you want to stay together or leave him just yet. Think of the practicals right now and making yourself and your babies as comfortable as possible.
In the meantime, if you are leaning towards reconciling I totally understand as you have a beautiful family together and responsibility to your children, and a history and it sounds like you've been together through a lot. It's understandable to not want to throw it all away because of your husband's actions. Nobody here would judge you for wanting to keep the family together, nobody.
Equally, nobody would judge you for wanting to leave. He betrayed your trust and you have to put yourself and your kids first.
I think it's a good sign that he came clean and told you. That to me shows that he's uncomfortable with keeping this secret. My partner didn't tell me. The AP did which made it so much worse. I wish I never had to have communication with her but hey ho.
If he is remorseful, watch his actions. Ask all the questions you need to make sense of this. Not to give him excuses, but to truly understand what he is asking for you to forgive him. Then you can make your choices. Remember that this is still your life, although he did something beyond your control at the time, you have control now. You can make decisions based on the information you have. You got this.
I really feel strong empathy towards you as a mum. You are in the right place here with the right people who have heaps of wisdom to share and we are rooting for you, whatever decision you make.
[This message edited by JustSomeWoman at 9:56 AM, Friday, January 2nd]