Period late 8 days .. 🤰?

xixi

My period is late by 8 days now going on 9. I’ve never been pregnant before, but I’ve taken about a test a day since day 5 and results have been negative. I’ve been feeling crampy and my tits hurt now and then. I had really random cravings last night as well. Just starting to get worried now, my period has only been delayed once by 4 days and that was due to stress. Any comments/tips, or things I should look out for?