If your gums get raw and bleed after brushing they are not healthy or you're brushing too hard or a combination of both.
Get a softer toothbrush. They come in many grades, get the softest you can find. And obviously don't scrub as hard.
Get a "gum stimulator" - one of those little reddish rubber cones either on the end of the toothbrush handle or a stand-alone job. Massage your gums with this according to the instructions on the package.
Rinse your mouth with warm salt water after brushing. This will both help heal the rawness and toughen your gums up.
As for your wisdom teeth what kind angle are you talking about? Are they pointing to the front of your mouth so that they are "impacting" the molars before them or are they angling towards your cheeks or tongue. If it's the first they have to go. Otherwise they may or may not have to go but could cause problems later on (such as constantly biting your cheeks or tongue) or making it difficult to brush back there and the molars start to decay.