I had an ultrasound and the doctor said everything was fine. They say …

I had an ultrasound and the doctor said everything was fine. They say that the ligaments are so painful, I'm in shock ? They also found "swelling of the neck area" on the ultrasound, they said it would be clear after a week at the first screening, but now I'm worried about this ? I'm not a panic-stricken person, but... In previous pregnancies I have never encountered anything like this.