Javajoetoes, you are only human---so, I think you should go easy on yourself on this one.
You are pregnant and in an incredibly stressful situation---it seems that you were trying to defend yourself.
I have lost my cool and said or done things that I was ashamed of--that were outside of my usual character. Sometimes, I have sincerely apologized--IF I felt that it was the right thing to do. Other times, I have just forgiven myself for loosing my cool---and vowed to myself to try to do better in the future (LOL).
Perhaps you could let the dust settle on this one for a bit--then decide h ow you want to handle it. Just don't beat yourself up over it--like I said, you are only human.
dandylion