High FSH but normal number of follicles

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I had a chemical 2 months ago. Took my Day 3 this month and FSH was 11 but ultra sound was normal with 10+ follicles on each ovary. All other levels were normal. Doctor said she wouldn’t worry because I have normal amount of follicles, got pregnant naturally and I’m 29. Does anyone have a similar story? I can’t help but still be worried that my number is so high.