No, I haven't experienced anything like that. Cramping throughout the luteal phase is fairly common, so I wouldn't read to much into that.
Unfortunately, you will have to wait it out and test the day your period is due or after if your period is late. Until then, no one will be able to predict if you are pregnant.
If you are trying, I'd suggest lurking over on the Trying To Get Pregnant board to get a feel for the culture of the board and start learning from the vast wealth of knowledge there. Friendly hint... Don't ask them if you could be pregnant. They can't answer that any better than anyone here. If you lurk there, you will see others get flamed for it.
HH is very wise. Your symptoms could be pregnancy, PMS, or something else entirely. Best to test it out or wait for AF.