New ttc... what’s going on with my body!

Sam

Hello! I’ve been off of birth control since December and I’ve been very regular since then. Now this month I’ve been cramping and spotting for the past 4 days (not supposed to start my period for 3 more days). I’ve never been early before. Could this be implantation bleeding? I assumed implantation bleeding would be lighter than this. I’ve actually needed to use a tampon the last two days. I’m also definitely symptom spotting so I’m trying to relax. Also, 3 negative tests over the last several days. What do you think?