I've cried several times.
There's the time my husband called me as I pulled up to the airport to let me know his mother had died - I didn't get there in time. More tears at the airport.
Many others, but today, MR BL and I headed for Paris, BL JR going to her grandparents, I had tears streaming down my face - a lady next to me noticed, but kindly didn't intrude - I watched BL JR walk down the concourse and make the turn. She was fine, I was a bit of a wreck.
If you need to cry, do - and don't feel bad about doing so.