My period was due Sept 30th it did not come until Oct 3rd. (3days late) The flow was heavier than usual but not alarming to where I thought something was wrong. My period continued that way on Oct 4th. I woke up Oct 5 and flow was very light almost gone about 3 hour into the day my period disappeared completely. On Oct 6 today I wake up used the rest room twice in 1 1/2 no blood what so ever then by 7am I felt cramping so I use the rest room and I am bleeding but only when I wipe and it was very light. Nothing was in the toilet bowl what so ever. I dropped my child to school and returned home at 9 and long and behold no period in site. My cycle has never been late and is normally always in tune with my calander. My period last about 4 to 5 days. I was on antibiotics three weeks ago for a toothache and yeast infection. I have had both meds before and nothing affected my cycle. I have take 2 pregnancy test and both were negative. Please help me understand what the problem could be with my first and only child I had a period when I found out I was pregnant and remember being embarrassed to give a urine sample and def didn't think I was pregnant since I was on my cycle. It's been 8 years so I am not sure what is going on with my body.