I have a job offer dilemma?

This is really common, and, unfortunately, just part of the deal. They have to push you, because if you refuse, they have to offer to the next person before that person takes something else. It's stressful, but normal. If you can get a few days, fine, but, if you can't, don't turn down the second one unless there's really something you don't like about them. You don't want to delay just because it's uncomfortable to decide so quickly because that's true for everyone. Only delay if there's really something significantly better about the third one and you wouldn't mind losing the second one.