Ultrasound at week 4.4

Sara • I am 28, and its my very first pregnancy :) excited, anxious, curious and grateful 💕 Happy to be in this community.
Hey besties, my ob suggested an ultrasound to rule out any abnormalities in the pregnancy (My backache was radiating all through pelvis - and my ob suspected a potential complication).
The trans-abdominal ultrasound showed not much, so they did a trans-vaginal too.
My hubby and I had no info on the pros and cons of the procedures so we just went through the process.
Now after googling about it an hour or so, I am feeling anxious.
Is a trans-vaginal risky for my baby?? Does it risk a miscarriage???