Hey ladies, I'm going to sound really dumb here but I just bought an opk and I'm not sure when to calculate my cycle from. It's now Tuesday. I had really light spotting on Sunday and Monday, then nothing today. I've only just started to get pms symptoms like bloating, headache etc today. The test says to calculate from the first day of spotting or bleeding, but doze it count as spotting if it's not every day?