New here. Implantation bleeding??

I woke up this morning to a gush of bright red blood. I put a tampon in and went on my way... Got to work and went to the bathroom and nothing but a little bit of brown blood when I wipe. Normally when my period starts it is heavy for the first 2-3 days. I decided to Google and now have myself turned into a nervous wreck. Has anyone else experienced this? Last night I also had terrible digging like pain in my right ovary.