Drinking

I've been having a lot of confusion. I really believed I was pregnant because I have so many symptoms, for about 5 weeks now. I just feel different. But every pregnancy test has come back negative and I just got my period again (2nd time now, although it's light again). But I figured I can't be pregnant because this wouldn't be happening if I was. So I abstained from alcohol for the past 5 weeks but when I got my period again yesterday I had 2 drinks because I thought I was safe. Now the drinks that I had normally would make me feel very tipsy, but I didn't feel a thing. And I find that especially weird since I haven't drank in a while so it should've hit me even harder and faster. But I really felt nothing. And I've heard of women who drank while pregnant (not knowing they were pregnant) have felt the same thing, didn't get a buzz. Has anyone else experienced this? Could this mean I'm pregnant still? I'm so confused