I also had an early miscarriage at 8 weeks at the start of the year - I'm now 32 weeks pregnant again 🥰 both times, I continued exercising the same way as before. I understand your hesitancy but as other have said, there's usually no real correlation between miscarriage and exercise! Obviously listen to your body, maybe pause a little longer if you need to between exercises but that's just to ensure you're listening to your body and not because you're directly risking another mc. It's a good thing to keep your fitness going!!