Is it normal that i get way more emotional than i used to be?

Growing up, I rarely cried. When I did, it was usually some ruse to get attention or to blend in room of crying people. Lol. It's not like I felt no emotions. If something seemed sad, I got sad. Same with every emotion. I just didn't cry. I hated crying. Still do.--Not that I see crying as weak or something like that. I just hate the feeling of crying and the reactions from everybody around me. Anyway.... Now, I am 23 and everything gets me emotional. I cry more than I did before and even when I don't cry, I feel myself wanting to. Character deaths in my TV shows/movies, Birthday/Holiday cards, nice texts, someone being a total jackass to me-- All these things used to only make me sad, happy, or mad, but now I end up crying or really wanting to. Sometimes I feel this actual build up in my chest or face.... I don't know how to explain it. You know how right when you're about to cry, you start kind of gasping for air or you feel tension/pressure in your chest or face mixed with some burning in the eyes? I feel that sometimes out of nowhere. It sucks because fighting the tears can really give me a headache. (Lol I really hate crying) I mean I really don't think I have become more mentally/emotionally sensitive to things, yet my body is reacting differently. What the fuck? Is it an age thing? Hormonal? Has this happened to anyone else?