How will i survive?

Sara
I am 12 weeks and 2 days. So far I have lost 16 lb. I am feeling sick since week 4.
I have bad flu and stomach infections. I gave bad diarrhea and fever. occasionally.
My body is very week. I have collapsed several times. How will be ok? When am i going to be ok? How can i survive 28 more weeks? 
I have been through a lot to get pregnant. I want this so bad but i am so tired and sick
Please give me words of encouragement....