Thinking about returning puppy

We just got our new puppy 3 days ago. He is a 4.5 months old pomeranian. We already have a 3.5 year old Golden retriever. I had a hard time with puppy blues when we got the golden, but finally got over it. Now after we decided to get the new one I found out I am pregnant with twins (we already have a 5 year old son). Now with nausea and the hormones all over the place I feel se bad, really depressed and can't think of going through the whole puppy phase again...! I really feel overwhelmed and lonely in my situation. I feel bad that we got him and now I realize it's too much for me to handle. What should I do. My husband is helping a lot but still I feel we don't have a normal life any more. He told me to get through the frist two weeks and then see again how it goes. Anyone with some advises? Thanks in advance 🙏