Heartbeat not accelerating??

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So I had my 3 hour glucose, and I also had a NST because I haven't been feeling the baby's movements as much lately. The doctor said that the baby's heartbeat isn't accelerating, but they're not worried about anything. Now I'm just confused and frustrated. I go back on Friday for an ultrasound and NST, I'll be having both weekly now as ordered by my high risk doctor. Now I'm not sure if I should feel worried or relieved. 🤦😭