He Forgot my birthday

So I don’t know if I should be upset or what but . I’ve been dating someone for a year.. we do everything together 😒 .... he met me around me birthday(April) last year an we celebrated his first one together last year November. So my birthday is coming back around and I just so happen to ask him and he said he didn’t know like he forgot the date 😫... I’m mad but am I blowing it out of proportion?