So I noticed yesterday when I went to wipe that there was a little brownish mucusy glob on the to, so I put a tampon in and when I took it out and it looked like this. Only small amounts. My bbs have been hurting (unusual for me) some cramping, headache, back ache, and (a weird one) but my legs are achey and they don't have a reason to be. AF is due 3-4 days from now Could this be implantation bleeding or am I out? I took a test this morning and it was negative, however I read if this is IB then it could take a few days to show positive. Thanks in advance ladies!