I'm so confused

So let me first say this no excuse.But i have done something out of hurt in ending a relationship and just being in a very weak state in my life.I did something not of my morals and values and spiritual beliefs.I'm so disappointed in myself and I promise I have never entertained married men in my life.Just a low moment for me.I was contacted by a married man and eventually allowed and agree to spend time with him while stationed.Fast forward months later emotions involved and after trying to stop talking to him i just couldn't stop .The temptation was beyond.Finally try and ends things..but i found out I was prego and Now I'm not sure what to do.I don't believe in abortions but we're not gonna be together of course and he has a whole family.He knows that I am prego and will pay for it or will only be there financially if I keep it..I feel horrible and confused.What should i do??