Unsure about symptoms!

I’m on the pill and have been for a long time but this last week or so before my period was due to start I have had sore boobs, sore nipples, I’m so tired, sore lower back and cramps ( could be just from the constipation though) I had constipation for like 3 days and then diarrhoea all of a sudden (not bad but not great)

I would of said it was just period symptoms but I have NEVER EVER had any period symptoms other than cramps the day my period starts and that’s

It! This all start maybe a week and a half before my period?

I’m so confused can someone give advice!