Weird period🤔🤔🤔🤔

So before my period I was drinking a lime a rita and I threw it all up - I drink vodka mostly when I drink so I thought it was weird I threw all this up because it’s only 8% alcohol for a huge can and I had only drank like a fourth . So I did end up getting my period - my periods are ussually 4 days fairly heavy clots falling in the toilet and all while I pee (tmi sorry). This time my period was super light no clotting at all I only had to change my pad twice or once a day and it lasted 6 DAYS . The last three days it was so light I didn’t even wear a pad because I was just spotting when I wiped. For the past two to three days or so I’ve been having this really really really bad heartburn that I’ve never experienced before . Do u guys think I could be pregnant n this could have been some weird implantation bleeding ? I am ttc btw.