5th percentile for rainbow baby's baby growth..

I got a phone call today saying that I need to go to a specialist in Seattle (UW) to get another ultrasound and meet with a doctor and somewhere between there meet with a high risk pregnancy specialist. My regular obgyn's assistant said my baby was/is measuring smaller then should be and there in the 5th percentile.. I have really great blood pressure.. I don't know what to think.. The lady that called me from UW to set up my appointment wouldn't tell me anything really just that I needed to come in tomorrow. My baby girl has been very active today and kicking lots.. 💕