girth and WO pump

I do my streches in the AM and jelq in the PM. My PM wo are ussally 350 - 400 wet jelq with some type of squeeze every 50 rep. I get a excellent pump and always measure it to check the girth to ck the pump. Its almost alway measures about 5 in which is a little large than when erect. I’m sure during the squezzes it measures large although I can,t ck. Question is though since it always measures around 5 inches when Im done am I stimulating any growth?

On the positive side I’ve gained 1/2 EBP and arounf 1/4 girth in the last 10 months 7 x 4.80.