Personally I think it’s fine to do- I thinks mostly the reason Dr. Simeons said to not do injections on period is because your body actually produces hCG when you’re menstruating- so I figure it’s kind of like your dose of hCG for the day right from your own body- so for loading purposes, this doesn’t matter since you are eating lots of food those 2 days.
The only time it can be more something to consider is when on the very low calorie 500 or 800 diet – then it can be a good idea to skip on your heaviest flow days so that you don’t experience excessive hunger, although to be honest I’m not sure I see this as being a huge issue that comes up a lot.
I hope this helps!
