Period advice would seek help

Hi lady’s after some advice my periods have been very irregular for past 6 plus months just give you idea on what I mean is I have missed period (1) I’ve come on period early I’ve come on my period late they have been quite light period or heavy and they have lasted a short period of time as well not the normal thew days. My periods used to be so bang on every month never had any problems at all Evan after child birth both time round my period returned to normal pretty fast. Just wondering whether this is normal ? And has by one else experienced this ? Should I be taking to my GP ? I very highly stressed could it be that ? Could be diet? I don’t know I never used have problem I know my ovary’s are normal as I have had them checked in the past