not sure if I'm pregnant...

My husband and I have been trying for about a month now I've been feeling a little more bloated then usual, feeling cramps at times, some back pain, and experiencing some breast changes... I don't know if this is all in my head, If I'm getting my period soon, or if I should go out and buy a test... I think I could be pregnant but I'm really trying to ignore it... Should I get a test? Or just wait till I'm late or see if I get my period I really don't know what to do...