Melissa, like Leslie said, it won't hurt to go get a test. I recommend spending a little extra money and getting a box that comes with 2 tests. That way you can test now and test again in a week if you need to. I hope this is a happy situation for you. I know babies don't always come under the perfect circumstances. They enter our lives when they are meant to, just remember that. As far as Martha, if that's what you call her, she will answer to it. Sometimes guides will give us a nickname if their real names are too hard to pronounce.
Good luck!