Isn't Dermaplast heaven? I know, it wasn't until my 3rd or 4th nurse that they gave it to me in the hospital, and I used the whole can!!
I think you are doing everything that you possibly can to help with the healing. Try not to focus on it too much, keep your mind off of it and maybe that will help.
The spot by your rectum, are you sure you don't have a hemorrhoid? They are super common both during pregnancy and after giving birth. If that's what it is, you can use any OTC hemorrhoid cream to relieve pain and itching. You can also take the tucks pads and just leave them on, like a compress. Take a stool softener in the meantime, so you don't have to strain at all when you have a BM.
The bruised feeling will most likely go away, probably have had a lot of swelling in that area that is coming down now and you are feeling sore. Keep and eye on it, and if it starts to feel worse then call your OB, just in case you've developed a UTI.
Congratulations on your new baby! I hope you feel better soon :)