Irregular period???

Kaycee

So my period is late by 22 days according to <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">eve</a> and I haven't had sex since the beginning of september. just today I noticing small blood spots in my underwear. could I be having an irregular period due to stress? this is not the first time I missed a period (the longest I missed was two months) but the small blood spotting is concerning me. has anyone had this?