Hi Sandy,
It's hard to pin point symptoms since they vary a lot. I would be very concerned about pain on one side. Another symptom is dizziness, although it doesn't effect everyone. I would call your doctor and ask for a blood test to confirm whether you are PG or not and follow up with another test in a few days. He may want to do an u/s, but if you are 4 weeks, there is probably nothing to see one way or another.
I think it is best to see a doctor especially if the pain continues. Please post what you find out.