Pregnancy or PMS??

I am at day 26 of my cycle my typical cycle lasts 24 days but last month it lasted 27 . I had unprotected sex the day after my fertile window & my boobs are sore & are fuller. I’ve been getting either no discharge or sticky light green discharge as seen in the picture. I have mild cramps but idk if it’s pms or early pregnancy my period is due tmmr. PLEASE HELP!