Might be preg and need info?

I might be preg. It poss happened 1 month ago. I got this strong craving for Juffy Cornbread w/ milk. Also Gobstoppers. This lasted 3 week and now Im over it. Is it poss to get cravings on and off thru the pregnancy, or is it a constant thing? Please no smart *** anwsers. I really appreciate everyones input.