My last period was January 9th, i usually have a normal 28 day cycle.. 5/6 day bleeding, im not sure when i ovulate. I had a miscarriage late September.. and since then my periods have almost returned to normal, except for theres a lot of small clots. I was having unprotected sex from the 26-6 which was the day my period was due but did not come. It came on the 7th as just spotting and was like that for 2 days and within the next 2 days i past about 3 clots and there would be smaller clots on the 5th day, the period was still usually light (only enough bleeding for a panty-liner). and on the 10th it faded as if it was done. The morning of the 12th it was brown discharge.. which faded to pink throughout the day.. This morning is was brown again that is now pinkish-red.. Could this be implantation bleeding? Ive also taken pregnancy test which came out negative. I have no other signs of pregnancy, i have a one year old.