please help. i’m so confused.

so me and my boyfriend lost our birginities to eachother on monday. today he said he wants a break. i’m so confused. where’s this coming from? he said i didn’t do anything wrong but he doesn’t want to have to worry about what i’m doing. i’m not very mentally stable at them moment but he doesn’t have to worry about me. this doesn’t sound like him at all. also he has come back before. we have a strong relationship. does this break mean things are over for good?