early period or percentage of pregnancie

Hey my name is maria I'm 21 TTC after ovalation I felts all theses things for two. Weeks straight  fatigue, more frequent peeing, lotion discharge, breast and nip signs, emotions, smells, appetite, vivid dreams (yes), lightheaded moments, upset gut, hot flashes, stuffy nose / runny , backache nausea , a funny butter fly feeling on my left side of stomach ; I had sex every other day this month sorry if it tmi with my fiance , and. Yesterday - had sex and started to spot but once and nothing came down  then today at 6am heavy flow came down and its two days early I have a appointment the 30th. Of sep but untill then can someone explain why I have all these. Feelings    is it normal for a period to come. Early I'm use to it being atlease a few days late but never early and my cycle change last month