PLEASE HELP

Brenda • Fri, Dec 12

So last month I was 7 days late on my period. I'm NEVER late, and my normal periods are usually 4 days. But last month I was 7 days late and I only got my period for 2 days. Does this mean my cycle has changed?? I took a test last month and came back negative. I don't know what's going on!! Should I retest or is it just my cycle changing??