If you are pregnant, I wish you the best. HOWEVER....you said your husband did not want more children and you agreed to stop with 2. Do not trick him. He is smarter than you think.
That alone would cause some trust issues with you and hubby if he for a minute even thought you planned this and secretly hope to be pregnant.
My dad divorced my mom partly because she planned for baby #2 and he was against it. He found out she was planning it and oh so happy!
If your hubby wants to be sure to stop at 2, he needs to go get snipped. A condom is not the answer.
I'm sorry if this if offensive in any way, I do not intend it to be. I see a time bomb ticking when a mom wants another baby and dad does not. I'm not speaking directly to you but I have had acquantainces laugh about how they got what they wanted (pregnant)and they are not so happy now. Trust is out the window.