I totally understand how you feel, I am 37 weeks now so on a whole other level of being over it but I also had all day sickness till I was 19 weeks, followed by 2 bouts of gastro by the time I was 26 weeks and have had just about every pregnancy ache and pain in the book! Just take your time, rest when you can and find some good movies to watch...your energy will return eventually...mine started coming back 3 days ago hahaha!