So last month (September) I had my period on the 27th. I recently met up with a boy two weeks ago October 16. We didn't have intercourse, he just fingered me and I have him a bj.but when I was giving I noticed he had precum, then a little later he rubbed and continued to finger me.. The day after I noticed a brownish line of blood on my panties. After three days it stopped. Was this my period? I'm so scared I'm only 19 and I also take birth control. Is it too late to take plan b?