Is frequent ultrasound bad for the baby?

Kelly • First baby on the way after 4 yrs of trying 😍

I am 6.1 weeks and have been in 3 tvs already, like i go every week. Friend of my husband said its not good to have frequent ultrasound. Not sure like how many gaps he meant by frequent. So im supposed to see my dr. agan after 4 days as i am having a bit of discharge seen on my tvs but she said or i could see her after 2 weeks. All up to me. I prefer seeing the baby every week but i dont want it to to do more harm than good. Any advise pls.