I'm pregnant and I want a seat, is that so wrong?

I'll be four months pregnant on Friday and I commute into Manhattan to work. I'm starting to show and I feel pretty lousy. Not as bad as the past couple of months where I barfed on a daily basis, but I get really tired and nauseous nonetheless. I can always get a seat on the way home, it's in the morning rush that it's impossible. Since I have generally been sypathetic to pregant women, the disabled and the elderly in giving up my seat when needed, i am hoping for some good seat karma in the coming weeks and months, but my formerly pregnant friends have told me "fat chance." and maybe that's the problem - maybe people just think i've stayed too long at the all-you-can-eat buffet and that i'm not actually preggo. on the other hand, one friend said her sister didn't get a seat until she was over 7 mos. i really can't wait that long. so, in the interest of keeping me sane and having an outlet for my venom for the common comfortably-seated able-bodied soul, i thought i'd start this blog. I'll be writing daily and seeing what comes of it.