Congratulations!!!
Being pregnant is one of the most amazing things a woman can go through!! Cramping and bleeding is not normal. Please call the Doc. It does not matter what your question is, they are there to answer all your questions and address concerns. It could be something very simple or not, but the only way to know is to check it out. I was high risk with 4 pregnancy's. I lost the first 2 due to being too stubburn to call and ask questions. On my third, my uterus ruptured and well, you can imagine!! But instead of thinking the worst I went straight to ER and they saved (by the grace of God) both my now 15 yr old daughter and me. My forth pregancy resulted in another girl and the most adventure I've ever had!! (still think "she" should have been a "he"!!)
But really, call and let them know what is going on, and put your feet up for the weekend. If you gotta work, I'd say better safe then not, stay home until you talk to the Doc.
Enjoy this time, ask questions, take advantage of the perks and all the help!!