i came off the pill 6 months ago and not using any protection as TTC. My last period was 31st july and came off 4th august. it is now september 17th and i still havnt had my period. i have never been this late before? normally my period cycle is around 36 days but i am on day 48 now. i had spotting about 2-3 weeks after my last period. took a pregnancy test 2 weeks ago and it was negative..took another one yesterday and it was negative. could i still be pregnant? when should i think about seeing a doctor?