How do people do it?

I really don't know how people survive morning sickness?? And then go on and have multiply pregnancies. I feel like crap and I am not sure how I am going to survive the next 6 weeks (if I am lucky) or more. Thank god I am not throwing up, however, sometimes I think it might make me feel better. I know I should not be complaining...in a little less than 8 months, I will have a little baby to show for all this but I feel horrible. Today, not only do I feel sick to my stomach, I am also tired and slightly achy. Yuck!! I think I need a nap.