I miscarried about a year ago and truthfully I had the same symptoms (it started out with pink spotting and then the next day I had slight cramping). I however did not have any nausia, so this might be a good sign for you. I'm not trying to imply that you are miscarrying, this is just from my own experience. Needless to say I ended up getting pregnant 2 weeks later (my Dr. was not too happy) and now I have a 4 month old little boy.
I really hope that all turns out o.k. with the pregnancy. I'll be praying for you.
If you need to talk, you can PM me. Try to stay strong and elevate your feet as much as possible. It might help some.
Christina