Why is this happening to me?

This is more of a statement but i am so tired of getting my hopes up, this i just knew this ws my mnth, all of these unusual things are happening to my body. I never get pms until about a day before my period and during my period. But now tht im ttc, its like i keep getting these symptoms that lead me to think i may be preggo. Ive been having the same symptoms since lst cycle which ws about 6 weeks ago. Headaches back pains extreme gas, queazy, leg cramps sensitive smell i mean i can smell evry thing, fatigue watery mouth vivid dreams. But im not preggo. Why is my body doing this to me now tht im ttc? Lst mnth i just knew i had implantation bleeding and then when i got my super wierd period i thought maybe i did luck up but i have taken 6 preg test in 2 weeks all came bk bfn so i got one mre and my period is due n 7 days. I said i wudnt buy anymre so im tryna hld out on this one...sorry for babbling just wnt to knw hw many other ttcers are going through this or have gne through this. Baby dust to all...