Had well protected sex on 7th december (last day of my period) followed by a levonorgestrel pill to be sure and took a pregnancy test on 30th december which was negative. Due date of my next period was on 3rd january but it is 5th jan today and I have not gotten my period. I had experienced dark brown sticky spotting on 28 dec to 3rd jan irregularly. Was the spotting withdrawal bleeding? Since it was almost like dark brown blood mixed with white discharge? What should I do.