Well... humans are strange creatures, love. We all react differently to differnt situations. Sometimes, we cry when we're heartbroken. Other times, our emotions are suppressed. When I dealt with a family death, I didn't cry for months... but when my stepdad yells at me, I cry so hard that I cannot speak properly. You're not alone, and I want you to know that there is nothing wrong with you for this.
Literally nothing... sorry! lol. you will definitely spot it at the other end in about 24 hours though! no worrys. i swallowed a lego once and i was fine!:)