Is Too Many Ultrasounds Bad For The Baby?

I’m currently 17 week pregnant , I want to find out the gender so bad but the anatomy scan won’t be until I’m 21 weeks (that’s a whole month away).. I want to pay for an ultrasound out of my pocket just to find out the gender but throughout my whole pregnancy I have had 3 ultrasound already(at 5 weeks , 9weeks and at 16weeks) Are too many ultrasound bad ?