Concern about weight gain

Roxanne
I am now 13+3 and the last time I went to the doctor for the first scan was at 9+2 weighing 119 lbs. Well today I am now 124! I see my doctor again in two days and I am scared she will get mad at me for gaining weight during first trimester. In total, my weight gain would already be between 7-10 pounds at 13 weeks! I don't want to sound ignorant or anything but is this weight gain too much already? Afraid that my baby will be too big. Also, my doctor isn't going to do another ultrasound until 18 weeks but I really really want to get one this appointment especially coz I want to be assured that my baby is growing fine and still within normal for the size. 
Oh and one more thing! My belly and upper thighs seem to be getting bigger. My stomach is fatter but definitely not hard enough to be a bump ... Just that at the end of the day it looks like I am 5 months pregnant already!!