I think you can get progesterone but there’s criteria for it. I was given it due to a previous loss and I had bleeding in the next pregnancy and that was the criteria to get progesterone x
If you can go privately, you can get progesterone prescribed. But you also have to pay for the private prescription.
I don’t think there’s anything you can do when in the UK apart from book a private scan for reassurance as I asked for bloods to be done in the first couple of weeks to make sure my hormone levels were rising but I was told that they can’t do it until I’ve had 3 or more miscarriages😕x