Is it okay to get another ultrasound?

I had one at 5w6d

Elected to have one at 13w1d

Had anatomy scan at 22w1d

Finished my anatomy scan at 26w1d

Can I get one at 27 weeks? I want to get a 3D of her face! According to the website it will only be a 10 minute scan

I know I have another ultrasound with my doctor at 30w1d and another at 34w1d and possibly one more after that....

Is this too many? I’m high risk I don’t plan on getting anymore elective ones if I do decide at 27 weeks...