Should I be worried!

Pauuu

So I was telling some of my co-workers that I had an ultrasound on my appointment done. They looked confuse as this is my 3rd ultrasound done. & my next one is again the 25th of this month. They said that they (2 women I was talking to) only had 3 ultrasound done. 1. When they find out you’re pregnant 2. When is about 5-6 months & 3. When the baby is almost near the due date. Should I be concern on why am I having to many ultrasounds done. Please can anyone tell me if they also had to many already? I’m 14weeks pregnant.