Last month i had a regular period. my period ended on August 21st. Me and C have been having unprotected sex.. we had sex on August 26th, August 29th, September 3rd and the September 7-8. All unprotected. I noticed i was bleeding on September 9th so i marked in in my period diary app on my phone. As i change my tampon i notice im spotting. i was spotting for 2 days. Then on the 11th it was regular. it is now the 13 and im still bleeding. im just concerned, my period usually lasts 6 days but i am concerned because my period came really early. 18 days early.. can u help me please i am really nervous