Pregnant and miserable :(

Ju
I am super early into my third pregnancy and although I have experienced it all before this time it is completely different. I'm no more than 6/7 weeks pregnant and I feel as if I'm 7mnths. (150lbs)  I stay bloated 24/7 and I'm constapted regularly and this morning sickness is far worse than I've ever encountered. I'm so emotional it's not even funny and on top of that I have ZERO energy to do anything! What is wrong with me? Has anyone else felt this awful so early on?