@Sparkly ..... I'm so sorry this happened to you. It is fairly rare, but sometimes this will happen. If you can get copies of your actual x-rays to post for us, that would help us to see exactly what was done.
Is the surgeon who did your revision the same one who put the original hip in? What information did he give you about what happened?
Because you had continuing pain in the area where the stem tip was located, I'm wondering if you might have had a small fracture all along. The repair work that was done for you and the longer stem should work just fine going forward, though.
I know it will take some time after this experience to really trust your revised hip, but it will come. The non-weight bearing is very important to allow everything to heal properly, so be sure to adhere to the instructions your surgeon gave you. Did your therapist show you how to enter and exit the shower properly? And do you have a shower seat you can use? You shouldn't be trying to stand in the shower.
Please try not to worry about this. It will heal. I suspect you'll feel better about it once you get confirmation from your surgeon that things are progressing properly. You're halfway through your "wait" period and hopefully you can find things to keep yourself occupied so the time passes faster. The coronavirus restrictions don't help, as one of the things we usually tell people who are in this "wait period" is to connect with friends, have them come visit, or have them bring meals to share. Maybe it would still be possible to arrange a meet-up with one or two friends just so you see some people in person.
I encourage you to spend extra time here with your BoneSmart family too. We're here to listen to your rants if you need to do a little of that. And we'll also just chat about how you're doing each day and try to lift your spirits. You will get through this and resume a normal recovery. Hang in there.