Uhhh a little help please 😭😭😭

okaaayy! So I “started” my period today and I’m not suppose to get it till 4 days after today. And like it’s not a usual period cause sometimes when I’m on my period and I pee there’s a mixture of period blood and pee and I don’t see that and it was kinda heavy the second time I went potty cause I thought i was just very wet down there so I went to go check and it was heavy blood but when I went to the restroom a little bit ago I took out my tampon and it was hardly any blood or heavy blood just brown old blood and some red and of course a stringy blood clot. So I went to go wipe expecting more heavy period blood and it was light as it can be like spotting. Sooooo what is this!? Implantation bleeding or just my period starting early and being abnormal because when I feel my stomach it’s kinda bloated but it’s getting harder not like how my usual cramps and bloating are