hi there, you seem to be having a high risk pregnancy
with history of 2 c sections, HT, pretem labour , polycystic ovarian disease
and now a uterine fibroid
. As such fibroid alone of the size mentioned is not alarming but along with the other factors mentioned you have to take consultation with your obstetritian and a close follow up during the entire pregnancy is mandatory. You will also need to keep doing a serial US of the fibroid to see for any change in size needs to be monitered. Take care.