Implantation bleeding or period blood?


My dumb ass never uses protection, but my period stated a week early and so far it’s been pretty light and only pinkish, but this morning after I sat up, so much blood rushed outta me and it was red but now it slowed down again. So my question is, since my blood was red earlier is it just a slow start to my period or is there still a chance I’m pregnant and just having implantation bleeding? If I’m not pregnant I’m getting on birth control ASAP