My daughter 24 yrs old with a daughter 4 has in the past year or two has had spells where she blacks out and feels faint during the day , also feels thirsty , and when she eats she feels full and bloated . She is very small 5 8 and probably 115. She has been to the doctor once and he said for her to increase sodium. She is going back again tomorrow, I am hoping they will do blood test. What test do you think she should ask for? And she has had a infection in her uterus in nov 2013. and was on strong antibiotics. But it is belived this is clear now