Tachycardia only when pregnant

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I have tachycardia only while pregnant. I’ve had it every pregnancy (3 full term and healthy babies) been seen by a cardiologist, had all that done. Suddenly a new midwife who I’ve never seen before decides that she is no longer accepting what is in my chart and demanding another ekg/echo/24hr monitor done because the nurse who took my BP at my last appointment refused to let me sit in the chair with my feet on the ground and it caused a wild reading and didn’t take it again. She called my after my appointment and told me I’m no longer qualified to be seen by midwives because she didn’t see my BP when looking at my chart. Even after explaining that I’m perfectly fine and it’s my normal she is just writing me off. I’m so pissed and upset that someone who didn’t even look at my chart or care to listen is just ignoring previous history, medical records, and the other midwives opinion. She doesn’t even work at the office I’m seen at, she was a fill in for another person.