Can bending forward and squatting be dangerous for a baby?

Today I had my photography pictures done and I had to bend down a lot and squat. Will that hurt my baby? My lower back hurts a little and I feel a tiny bit pressure in my lower pelvic area. There was a point where I felt my upper stomach ache a little. I usually feel upper stomach pain once in a blue moon while just laying down and eating. But my obgyn said it’s heart burn. So I’m not sure if it’s because of that or from bending forward

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