I started these pills Jan 7 2018 , first week was horrible I felt like I was pregnant, but I kept going , week 2 wasn’t so bad I went back to normal but started my period on January 19th. It lasted 7 days , now I’m on 4th row which is the iron brown tabs, does this mean I get another period? Because they said that , that’s when I’m supposed to get it but I got it early on second week of pills?