8 weeks 1 day with Twins

Melissa
This is my 1st pregnancy and I'm pregnant with twins. I'm 8 weeks 1 day now and my regular pants don't fit, I've been using a rubber band to hold the top closed (LOL).  Is it normal to be showing already? I weighted 123 before pregnancy and now I weight 127, not a big differnce but I sure do feel it when I try to put on pants.