Implantation bleeding??

So I've been feeling weird so I think I might be pregnant but I've taken 5 tests over the past week and a half and they all have been negative. But yesterday I started very very slightly spotting or at least I think. These pictures are what I got this morning. It's not really a pink or red color it's more of a brownish color. Does this look like implantation bleeding? I've never been pregnant and I've had one miscarriage and with that I did not have implantation bleeding then I noticed. What do you guys think? I still have 5 days until my period is supposed to start. Help!