What am I really dealing with?

This my 5th pregnancy, and I never really experience this hard. I’m sooo tired, I can’t cook, I feel sick to my stomach, no craving, I feel nauseous but not throwing up. I feel bloated, moody, etc. I have bad nausea in the morning and night time. I hardly eat anything, but water. I would just force myself eat something. The smell, anything make my head hurt so much! My whole body just so drained. Pressure on my chest. Other than that, I’m ok. All my four babies I don’t experience anything but craved sweetness and I only get sickness here and there and veryyyy bad back pain. I’m surprise I don’t have back pain with this one. Yes but I know I don’t make any sense but idk how explain how I’m feelings. Not the best experience so far. Is it just those really bad morning, night, or an all day sickness? I don’t know. Someone help, what to do? What to make it feel better. Urge!