3rd anatomy scan :(

Just needing to vent a little ladies. I am 23w3d and have just had my 3rd anatomy scan. The first one was done at 18w5days but they were not able to determine gender or see the spine and heart very well so I had a repeat one done at 20w5days. We were able to determine that it's a girl but still not able to see the spine and heart well because of her positioning so they referred me to a high risk ultrasound center and I just got back from my appointment. They were able to see her spine perfectly but were still having some trouble seeing everything with her heart. They tried for almost 2 hours and then the doctor herself came in to try but could not see what she needed to. I am now extremely worried because she said I do not suspect anything is wrong but I can't say that everything is fine because I can't see what I need to see. Her heart beat has always sounded strong and in the 140-150 but now I can't help but worry. They want to bring me back again when she is a little bigger to try again. Having this many ultrasounds also concern me even though they tell me it's not harmful to the baby. Sorry for the long rant. Just worried about my little one and when I try to talk to my family about it they just say try not to worry. Thanks for listening everyone! Hope you're all doing well