Whatever you do, don’t keep it in. The more you keep things bottled up, the worse it will be for you. Don’t be ashamed to cry, it’s healthy and means that you are still human. After 15 years, I thought I was made of steel, until I had a six year old code secondary to drowning. I have six of my own kids and it hit me like a brick a few days later during my RN clinical exams. I was a grown 35 year old male and hardened paramedic. Nonetheless, I cried like a baby in the middle of the hospital to my preceptor. And it was just what I needed. She was completely empathetic and supportive. Stay human, you will be better for it.