My 2nd last period was at 8th june 2018 and lasted for 5 days. Next date was scheduled at 8th july as I am pretty regular so I took primolut-n for delaying my periods starting from 4th july till 9th july. I had sex at 10th july and took emergency contraceptive pill i.e. Ipill within 4 hours. At 14th july I started to have vaginal discharge and by 15th july I had my periods but with moderate flow, bright red, less clots and lasted for 7 days. One week i.e. 27th july I noticed dark brown to brown discharge from vagina which lasted for 4 days. From 7th august to 11th august I had breast tenderness. Today is 15th august and my periods didn't arrived. I took home pregnancy test at 13th and 14th of august. And got negative. Please help. Concerned.