OMG help!

My daughter had her 6 month well baby visit yesterday and YET again the asshole Dr made me so angry that I SWEAR I'm never seeing her again. I said this last time she was our Dr at the Peds but I forgot to ask to NOT have her for the well baby visit.

Ok well... The Dr told me that my daughter has low muscle tone... My google-fu says stuff like muscular distrophy and things that are pretty much "with her for life" type issues. Once my Dr brought this up I asked her on what basis. She said that my kid doesn't hold her head as steady as she'd like to see it and since she's not rolling over both ways at 6 months that it's a red flag for her. I asked if she was talking adjusted age and development.... her response was "Oh... well MANY babies at 4.5 months do that anyways... I wouldn't worry just yet, but you might want to call the MHMR building to see them if she doesn't soon". I about shit another child.

First off... Don't tell me something and then backpedal on it... just admit that you are wrong or didn't read the chart. she pissed me off.

So I do have a question... What would you do in this case? Should I go back to the office for a more intelligent opinion from a Dr thats credible or find someone else all together? Do I panic and run her to early intervention over a moronic Dr who even admitted her stupidity? The Dr even said "well with how developed and big she is I always forget she was a premie"... that woman is useless.

Anyone have tummy time exercises that'll motivate her to roll?