Boyfriend thinks we have our rainbow baby

I miscarried almost exactly a year ago,  and after I had naturally miscarried I was devastated. I'm far too young to have a baby, so I got on depo shot last August. Now, I'm off the shot because it is awful(never do it) and switched back to pills.  My boyfriend told me the other day that he believes im pregnant because recently I've had all these cravings (period coming up) and now it's all in my head that I'm pregnant, however I know there's less than 10% chance that I am.  I'm just so traumatized by my miscarriage I know when my period rolls around I'll be devastated. Baby fever sucks when you know you are far too young to have a baby/: just needed to vent