I'm impressed with your GP! He doesn't mess around when it comes to pain and that's awesome!
Here in the states, we have the DEA breathing down so heavily, most Drs are very conservative when it comes to opioid treatment.
I hope the itching isn't too bothersome. With the lower dose, I bet you'll adapt and be very grateful for the pain relief!
You might want to make sure you eat prunes!
Constipation can be quite frustrating, but I tell ya, these side effects are worth it to me to NOT have to deal with that maddening horrible constant burning pain. I about lost my mind.
Even if the pain is only a '4' on the pain scale, it can seem like a '10' when it is chronic and constant.

Your story is absolutely heartbreaking about how your life changed in that one split second that you took that fall! And being pregnant, I'm sure you were being so careful and yet the floor was slippery unbeknownst to you
And all you've been thru in trying to recover from that incident! All those casts! And yes, the humility of having people give the impression that our pain is being exaggerated. I just hate it that so many people suffer needlessly when there is plenty of pain relief to be had.......seems we get outnumbered by the recreational drug users though, so with it comes the 'bad name' . boooyah.

Motherhood is such a wonderful blessing, yet you've had a price to pay.
Just doesn't seem fair.
You are strong and you've got alot of things going for you, so do your best to remember that, especially when the 'bad' days roll around.
You've got a great doctor!
Wish they all could be like that!

Have a great weekend
(((Hugs))) from across the pond,
Rae