I started taking birth control pills 4 days ago and since then I've had some brown discharge. Today I had a little heavier discharge with normal blood too. When I took the tampon out of my vagina, a weird thing came out after it and it freaked me out because that never happened before. It was a pink thing that looked like flesh and it was like a little string, or like a worm in form. It was about 8 cm and actually it was different in each part. One end of the "string" was reddish, like an usual blood clot, then it got pink like a piece of flesh, and then the other end was still pink but transparent and easily breakable. What the hell is that? Should I be worried?