I think I’m pregnant...

So I’ve been having some pregnancy like symptoms. My boobs hurt, my bra doesn’t fit right and I just bought it. I’m having cravings for things I don’t like that much like bbq covered everything then weird ones like I want chocolate cake and orange juice. I’m a smoker (I know I’m trying to quit) well I can’t even smell a cigarette without wanting to puke. I drink coffee every day and now I can’t. It makes my stomach upset. My husband says I’ve been a little snappy like more then usual. He’s convinced I’m pregnant. So is my mother and all my friends. So I’ve taken 6 test all have been negative this past week. I don’t start until next week. I think Im pregnant but I’m not sure. Help! What should I do next? Wait until I miss my period or go to the doctors? Also we have been trying for 3 years so I don’t want to get my hopes up and not be pregnant.