Biophysical profile (bpp) today- measuring small

Sarah
We have a BPP today. The baby has been measuring small but not alarmingly so, then in the 5 days between our last two appointments there was no growth. 
Everything has gone really well up until this point, and yesterday I was feeling really optimistic about it. Seeing this as an opportunity to possibly find out our baby's gender since he or she was shy during our 20 week ultrasound and wouldn't let us see.
After extensively researching what the reasoning and possibilities behind the BPP are last night I woke up this morning feeling absolutely anxious and panicked. Ended up in tears and having to be calmed down and comforted by my husband. (So thankful for him)
Just wondering if anyone has any experience with this or words of encouragement. I'm just feeling so worried and scared.