So I had my period last month just fine, a day late but I started like the morning after I was supposed to but I havent had sex since but I was supposed to start yesterday and haven't?! But I've been cramping and bloating and stuff?! Idk if its from the stress because I've been under a lot of stress with work and now I'm stressing about the period thing :/ or could my exercising be a making it late? I do crunches every night and my 50 has gone up to 150 plus like 150 more fof variations of other types of crunches/sit ups and yesterday I all together I had to of done at least 300 and today I've done like 500 already and feel like I need to do more after I eat or drink.anything..... Help me please!!!!