My last period started on the 28th November and I think I may have O'd around the 12-13th of December. DF and I BD'd on the 10th,11th and 12th December. AF was due 27th December, On the 26th I got some very light brown/pink discharge which lasted approx 36 hrs stopped completely for 24 hrs then got a very light brown discharge again this morning. To me me this looks nothing like a normal period as I usually bleed heavily for a least 6 days. Would it be worth doing a HPT or not? Or should I class this as my next period?