Alcohol intolerance

Long story short. I have irregular cycles and I took a test about 14 days after I think I ovulated. BFN.

Now, this past Friday which is about 2 weeks later (so almost a month after possible O) I had some beers. Usually I have a really high tolerance for liquor and can drink a bit before I feel it. Friday I had 1 beer and felt tipsy and by 3 beers (which spanned across a period of 3 hours) I was so drunk.

So can alcohol intolerance be a sign of early pregnancy? I'm going to get a test tomorrow morning.