OP, I will pray for you! Hang in there, and know that God will give you the Grace to do it. Before Mass yesterday I was talking to a mother of 13 children. She asked me how I was feeling with this pregnancy and I said I was so tired I could barely function. First trimester really is hard. I was also telling her about the sinking feeling I get when I think about having another baby so soon after the last (was pregnant 3 months after last baby was born). When I asked her how on earth she did it, she shook her head, and with very kind, empathetic eyes, she said, "You just do. You just.... do." That, believe it or not, was the most encouraging words that I have found so far. It wasn't advice, just empathy. It is so good knowing that there are other mothers out there going through the same thing, and many mothers that have went through it and are very saintly because of it.
You are doing great, hang in there!