Does anyone have any ideas on how to make my period come already? I'm late by 4 days and I don't think there's a chance I'm pregnant. I've had sex but we've always worn condoms and he hasn't finished inside me. He's pulled out long before he had to cum. I've taken 2000mg vitamin c over the past two days and I feel irratable and tired and just wanting food like my regular pms is but my period just won't start. Any ideas?