Dumb question

Emily

So I seen my midwife at one point she said that my fundal height was about 14/15 weeks, 4 weeks later she said about 17/18 weeks. Two days later on March 22, my ultrasound tech said 15 weeks 2 days and my due date is September 10. I understand that my ultrasound is more accurate with my due date but could the gestational age be what my fundal height is reflecting and the fetal age is the 15 weeks 2 days that my ultrasound reflected?