I'm never quite sure cos my periods have been light since being off the pill and I'm at home all the time so a lot of the time it's safe not to wear any protection and just go to the loo more frequently so I'm never sure if I'm spotting or it's light flow. My periods usually start out very light then are heavier for 1 or 2 days then light again. Even on heavy days for me I can wear a mini tampon for a whole day sometimes.
I think it's safe to say today isn't day 1. But tomorrow may be but it all depends on what is considered the line between spotting and light.
I will ring the clinic tomorrow to ask. But I was just wondering what other ppl thought.