Helpp. Driving myself crazy.

Alright so according to this app I was ovulating about a week ago, today I started spotting really lightly I have cramps but not like omg kill me period cramps, the spotting keeps getting lighter and lighter. I've been googling implantation bleeding like crazy, it sounds like it could be a huge possibility but the thing is I'm not expected to start my period till the 26th of feb. Is that normal could I be pregnant ? Oh I took a test and it was negative but it also said it could just be too early to pick up the hormone. I'm just wondering. Any suggestions ladies?