Please help!

Hey ladies,

I have a slight problem. Since it first started when I was 9, my periods have always come in with a bang (big cramps, nausea, vomiting, diarrhea, etc..). However, after I turned 25 in August around October my period was waaaaaay late...I didn’t even have a period for October (my last normal period was right around my birthday). So it came on in November late in the month like normal except it was lighter than normal. December came and again, I was super late, like it just came on 3 days ago except this time I’ve only been spotting for the last 3 days. I don’t know what to do. I’ve taken pregnancy tests and they’re all negative (☹️) but I’m starting to get concerned I might be going through menopause or worse I have some type of condition/illness. Has this happened to anyone else? Please help.