Help and advice

Faye'Louise
My last period was the 10th of the 15th October I had sex the last couple of days and days after my period on Wednesday the 15th of November I had signs of my period I wore a tampon for 4 hours before changing where I noticed this was not my period I was just spotting so did not re insert a clean one did not have any other spotting the rest of the week until Saturday the 18th which was very light nothing on Sunday nothing on Monday untill Today tuesday 21st november when I am spotting again I also have extremely sore tender heavy enlarged boobs can sensitive nipples I normally get sensitive tender boobs a week or so prior to my period my boobs have been tender sore for the last week and a half to two weeks has anyone ever experienced this or could let me know what it could be thanks