Should I be concerned about my period?

Do you think my periods are irregular if I spot for 5 days before my period and one month it's 23 days apart next month would be 24 days then the next month it would be 25 days but I spot in between so my period last a total of 10 days including spotting. Plus my periods are lighter than it used to be. I am 30. Should I see a doctor for this? My last period spotted on April 25 and started on April 27th. It ended on May 3th and now it's May 19th and I have yet to start my period. What is this caused by and should I be concerned?

Should I be concerned about my period?
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