am i crazy ??

my period is a little over a week away (i have about week inbetween my period and my fertile window) & i’m feeling so YUCK, i have the worst cramps, back pain, i’m constipated, and ive had 2 really bad nose bleeds. (yesterday and today, & it’s very rare of me to get nose bleeds)

before my period starts i NEVER feel like this, at least never this bad, definitely still this far away, i was wondering if there is any possibilities i could be pregnant ? i’m really not ready for a child & i’m really nervous . am i just over thinking it ? my period usually comes between the 28th-2nd, so its still kinda far away to be feeling period symptoms, do you think i just might be sick/ate something bad, or could i actually be pregnant, wouldn’t it be too early to tell ?