Not pregnant 😞

My boyfriend and I have been under the assumption that I was pregnant for about a month as we had a condom break and I was showing all the signs. I even am late for my period. So I took a test today and it was negative and he was super excited and I am actually pretty heart broken. He doesn't understand and I don't know how to make him. We're on the young side and probably not ready for a baby right now but I can't help but be sad. I feel so crazy. Please help!!