Till november i had my periods timely on 9 date of month but in december i got my periods 3 days late on  13 dec n we from last two months we are trying to conceive on 4 th of Jan I had bleeding (as my period date was on 13)I thought it's periods while urinating I had clots but I used the the single pad whole day there was no much bleeding it continued only for 2 days 3rd day no clots nothing having white discharge now on 10th jan I m having left lower abodomen Pain n back pain ?What might it be pcos or pregnancy??