How can i check if a Stripe payment is succeeded?

I have a POST call to Stripe Checkout API. I do not use the Stripe Payment Action because it does not support payment methods which i need. So i have to make a API call to Stripe Checkout, but the Stripe has many responses. And the response with the payment status comes later on. If Flutterflow had webhooks, this would be very easy. But since it does not have webhooks, how can i check if the payment is succeeded? How can i check the response later on?