Mad Dizzy/hungry/thirsty 24-7!!

I feel dizzy and lightheaded almost 100% of the time. I now can't stand up without feeling like I'm about to faint. If I look from one thing to another too quickly I feel uneasy. 
I'm also ravenously starving. I can eat all the time but the smell of cooking food makes sick. I wake up several times a night with extreme hunger. Also same with thirst. I feel dehydrated when I go to bed and wake up so dry in the mouth and my skin.. I drink probably 2-3 bottles throughout the night. Not so much during the day though. 
I get super sick in the morning and suffer anxiety attacks if I don't sleep in until late. 
I'm cycle day 44 without a positive test yet. Took my last test 2 weeks ago. I'm almost positive I am but I am not 100%. 
Any pregnant women out there feel this extreme of symptoms this early on? If I am pregnant I would be 5-6 weeks.