I hate that doctors make you wait! I had cramping off and on throughout and agree with Jane M. One thing I did, because I was so annoyed with having to wait, was made an urgent appointment with my primary at the time. As fate would have it, my primary was out of town but they didn't want to wait so got me in to see a family practice doctor who was wonderful. He was in his 60's and was so reassuring and answered all of my questions and worries. It eased my mind and was well worth the visit even though he essentially said what Jane M did!
He explained that he thought they made newly pregnant women wait until week 8 because of all the fears that come with first time and new pregnancies. He also said I could call his nurse with any concerns I had before the 8 week appointment so I didn't have to feel alone and he would make sure they responded in a timely manner. This eased my stress and actually reduced some of my early pregnancy symptoms as a result.
I'm sure you are fine:) But if there is any spotting or bleeding definitely go in. Cramping is but one of the many things that go along with pregnancy for sure. The book "What to expect when you're expecting" prooved very helpful as well:)