Please take care of yourself. Sounds like your immune system is not up to par right now and that means pampering yourself.
A rescue pup would be a wonderful idea. I know you aren't ready to get one, but it's nice to think about what you are looking for, which I can see you've already got some good ideas as to what type. Small is a good idea, especially if you dad is going to share in taking care of the little one.
Enjoy the rest of your week!
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.