I can relate to you guys. I've read all the posts I've actually been a little worried about this too. Thanks to everyone giving advice, it makes a lot of sense.
My story - I also got confused about blood work! I was being checked for something completely different. It was a "full panel" but, of course, there are different blood tests. Since that one came out healthy I forgot and started thinking my other levels were checked too o_O I spaced out. I've been under a lot of stress and anxiety so that could be it! I've missed one or two and have all the PMS symptoms, just no period.
It's ok to ask your doctor for a pregnancy test. Mine explained to me that he asks every woman to take one to be safe. It makes things easier on everyone. He has good reason and every right to ask, really. Don't hide things from your doctor, they're there to help not judge! Take care
-Christy