implantation bleeding?

So my period is very regular by I think I started 4 days early. I had watery red blood come out in drops into the toilet and have had brownish blood the next day (today) but not a lot. I googled if alcohol could mess with your cycle and it said yes and last Sunday I drank for the first time in months and didn't know if that was a possible reason. Idk if I'm pregnant or if it's implantation bleeding or just a really weird period 😭I've had bad cramps and don't know what to do, please someone help