Cycle change HELP

Eve

My cycle is usually 28-30 day cycles in July I had a 35 day cycle I guess my cycle changed but now I think it’s changing again because it’s going on cycle day 36 & I still don’t have my menstrual. I’ve been cramping, feeling nauseous, acne & have a headache some days. Today I’m feeling ok & my stomach is feeling weird. My last menstrual cycle was on 9/15/21. Could my cycle be changing to 37 or even more days is that possible????

Helppp