M.F.
Just hang in there. I had the same dilema. I was always tired and hanging my head in the toilet.
My daughter almost seemed tounderstand what was going on thought. She would pat my back and give me hugs while I was getting sick.
The only thing that helped me was to simply lay down. At the time there was a spare bed in my daughter's room so I would close the door and lay down while she played with her toys. If I fell asleep I knew she was safe because the door was closed. I know how horrible that sounds but it was the only way.
If she needed anything she would wake me up and I would do whatever it was that I needed to do. You play through the pain so to speak. Then when I would lay down again.
I spent the first four months of my second pregnancy laying on the couch or in a bed.
Once the sickness passed I was myself again.
Hang in there. It will pass soon and your daughter can have you back again.