Couldn’t find heart chamber

I had my 20 week anatomy scan last week and the doc couldn’t see all of the chambers of my little guys heart. He said it’s sounds good and everything else looks good so I shouldn’t worry. I’m going back in a few weeks to get an other ultrasound to check for all of the chambers again. I know the doctor said it’s probably fine, probably just couldn’t find it in the pic, but it’s so hard to not spastically worry😭😭