I'll just reiterate what's already been said here:
Dosing schedule completely wrong.
Dosage completely wrong.
Water retention as a side of hGH - wrong considering your low/infrequent dosing protocol.
You were asked what brand growth you're using. I'm left only to assume you're using Saizen since that's where you say you got your dosing protocol. I would consider myself a very experienced hGH user, both UGL and real pharma. I've never seen a dosing protocol like the one you've laid out anywhere, ever.
Do you have pre/post hGH-dosing bloodwork we can see? If not I would discontinue use for 30 days, get bloods done to establish a baseline, then re-test using the following hGH blood work protocol:
Fast 12 hours before you have blood drawn.
Recon 10iu vial of hGH with 1cc Bac water.
Inject full 10iu reconned hGH, intramuscularly.
Have blood drawn between 3-4 hours after IM injection.
Have 2 tests done: hGH Serum and IGF-1
Once you have your test results you will know for certain if your hGH is legit or not. This is the most important thing you can do when starting an hGH regimen, in my opinion. Without this you're merely guessing when trying to diagnose sides/symptoms. There a numerous variables that could explain the symptoms you're describing. Diet (sodium/potassium ratio), dehydration, or as previously mentioned you have HCG instead of hGH - a very common tactic employed by many counterfeiters. Or even worse - you have a 192aa sequenced compound instead of 191aa; another common counterfeiting measure. That would surely explain your "hot flashes", your body naturally rejecting the bio-incompatible 192aa chain.
It sounds like you've adopted an hGH regimen in hopes of healing several chronic injuries. To that end I would recommend a dosing protocol of 4-6iu/day for 6 months. If this is untenable due to financial constraints, or whatever, then save your money and go a different direction. SARMS are fantastic for healing chronic injuries and this forum has a wealth of info for you regarding their many benefits and uses. And SARMS are far more affordable and user-freindly.
I hope this has helped and I would be happy to assist you in any way I can in the future.