i started spotting exacly 14 DPO (days past ovulation) my cycle is exacly 28days but since u have a short cycle im guessing it would be less that 14 DPO for urself you should get a couple home tests an see what they say if u get a positive head to the GP he will send u for a blood test to check ur HCG levels an guess around how far you are i think congrats is in order wishing u the best of luck..keep us posted