They take 3 pieces of gauze and fold it in half and half again and then pull the needle out while slightly pushing down with the gauze, and when it is out they put pressure on it and then transfer it to me. I hold it for 10 minutes. Then they come and put 3 pieces of paper tape on each site. I don't like bandaids at that point. I may leave it on for 4 hours or all day depending. When I take the gauze off if it bleeds I then use a bandaid.This is just my technique.
Ask if it was a sure seal Paddbear. You can't tell from the appearance that it isn't just a bandaid.
If your center has not given you emergency supplies to deal with a "leaker" on your route home, ask for it, or make your own. I have a little kit with gauze, tape, gloves, sure seals, alcohol preps and wet wipes for cleaning up messes. It's all tucked into a baggie in the tote I carry my books and boredom supplies in.