scared!! 1st baby

I am pregnant with my first baby and I am 10weeks and two days ! I have had ultrasound since 5wks 6days with hb 127 I can't help but be worried when I go back at  12 weeks something is going to be wrong! I haven't had any bleeding spotting or severe cramping which I think is good but I am afraid that the baby had stopped growing and won't have a heartbeat since I have heard a lot about this! I want to be happy and excited but I am so scared at the same time 😣😣