Ay sayang, I understand lah how scary it must be, especially after just having a hospital stay Fast heartbeat during pregnancy can happen due to many things, anemia, dehydration, anxiety, or just the pregnancy itself, so do make sure you're drinking plenty of water, resting well, and managing stress as best you can. That said, at 24 weeks this is something your doctor really needs to monitor closely, so I'd gently encourage you to keep those appointments and be honest with them about how you're feeling, rather than try to avoid admission, they're keeping a careful eye on you and baby for a reason, and it's actually the safest thing you can do right now. Sending you lots of strength, mama!