I do not like my OB!

Did anyone else have a poor experience with their ob? I went in yesterday for my first ultrasound and my baby is measuring behind their gestational age. My first baby was always right on track so this was a shock to me, but they brushed past it and said “since it’s measured within 5 days of the GA its okay and were not changing your due date.” Well I’m sure they’re right and my baby is completely fine, but I wish they would have spent more than 3 seconds addressing it, explaining reasons why the growth could be behind (am I not eating enough calories or did I just ovulate later in my cycle?). Im already struggling to eat enough as is while still nursing a sick/teething toddler, so im sensitive to the fact that I might be harming my baby somehow! Then they made me wait 40 minutes for the doctor, who spent maybe 3 minutes in the room with me and brushed off my concerns about my prenatal that gave me full body burning red splotches on 3 separate occasions. When I brought up that I had issues with it she didn’t even let me finish my sentence, she cut me off with a “it made you nauseous.” NO! I looked like I had spent the whole day at the lake within 45 min of taking it!!! So now idk what to do. I don’t want to go back to someone who doesn’t make me feel heard and treats me like an inconvenience and not a patient. I guess its back to the drawing board trying to find a new one