Welcome to the Board! Aruba is a lot of wreck diving and the reefs are lacking compared C & B of he ABCs!
It is better when new to be 2lbs heavy than light! So add a couple extra lbs! Everything in the water should be slow motion!
Blood from the nose is very common and has very little do with ear clearing! Start on the surface and continue all the way genitally blowing against your closed nose while moving your head from side to side stretching your neck as far as possible! It will become easier the more you do it!
Keep all things out of your ears and do not remove the natural wax with a q-tip! They cause micro abrasions and allow infections in! Use ear beer after each dive! 1/3 alcohol 1/3 white vinegar 1/3 water in a dropper bottle and you will not have a problem!
Barotrauma
https://health.google.com/health/ref/Ear+barotrauma is from pushing through the pain instead of equalizing! So be sure to equalize as you go each dive and every time you go deeper!
Good luck and happy diving! Feel free to ask you will get a lot of opinions!
Don't waste your money on masks and ear plugs until you know there is a problem you can't cure any other way!