It can be.  I cramped a lot before I found out I was pregnant, so naturally I thought I was going to start my period and didn't.  Best way to know is to get tested.

Lol it means, you can't have things both ways. For example you can't have a girlfriend and a mistress on the side or boyfriend whatever the case may be. I guess some can, but that is it in a nut shell, you can't have it both ways.

You might try calling the IRS.