No AF since end of May

PLEASE COMMENT! 
I have been taking naps almost everyday and I'm still ALWAYS  tired! 
I have been crying over the stupidest videos on fb.
I have been peeing a lot more then normal 
I have had acne for about a month straight and that isn't like me. 
I have been eating more
I can only sleep on my right side without feeling sick. 
I do have a history of endo but I got the surgery in March. I don't know what is going on. I took a HPT two days ago and it was negative but I'm going to my GYN on AUG. 13th just to be sure. Does anyone think I could still be pregnant? 
TOOK THIS TEST TWO DAYS AGO