HELP!!!!!😩😩😩

Le

So my period wasn’t suppose to be due for three more days. Yesterday I had some brown/old blood when I wiped & today I have had very dark red blood when I wipe. Could this be implantation bleeding or AF coming early?

Also, my nipples have been very sore. Food that I normally like has tasted bad. I’ve been nauseous after I eat. ANY HELP?! Thank you all!