I believe its normal, I'm almost 13wks and i still have those pains around that area...maybe your anemic .
Motrin is safe its ibuprofen and my o.b. reccomendes it for my pain. :)
I don't think u can take motrin since it has aspirin but Tylenol is safe. About the pain I agree it's due to ur uterus growing.
Its normal to feel some pain, even period like cramping during pregnancy. Your uterus is stretching and growing so your body has to adjust. If it becomes severe or you bleed excessively then go in to the hospital right away.
Until then I would suggest taking motrin or Tylenol to help with the pain and yes they are safe for pregnancy.