Sorry to hear that, most uncomfortable. Did you wash the suit to get rid of the alarm pheromones from the stings? You will get better at handling the bees and fewer stings- I get far fewer using nitrile gloves so I can feel the bees fizzing under my thumbs, than when I wore washing-up gloves, never leather! Then you can feel them before squashing, which upsets everyone.
If they are grumpy on opening, you can walk away to let them settle, move hands and arms slowly over the hive, and avoid jerking the frames- they like gentleness. It might be useful for an experienced beekeeper to come there to see if your bees have aggressive temperament and need a different queen, if they are still nasty. If so, get some help to find the queen, maybe in Spring, by moving the brood box away from the hive site so the flying bees (stingers!) go back to another box on that site. Then there will be fewer bees to go through to find her. I would suggest that you then remove all of her off-spring queen cells after a week and put in a frame of eggs and larvae from a nice-tempered hive. That can be left to get a new queen mated and laying, without braving the old queen's warriors. Hopefully, it won't come to that.
The little guard bees seem to find the smallest gap in your suit! Hope they all settle for you. If you are a bit nervy, they may pick that up, so maybe having someone experienced with you as you build confidence will be good. Good luck , keep calm and keep going!