3 weeks pregnant means you are really only 1 week. I dont think you could start to have swelling already.
Also, 1 week 4 days pregnant is not considered pregnant. You go by the LMP (your last period). And if you look like your 4 months already, then you should get checked out to make sure it's not another problem.
I've never been pregnant, but I do read up on these things. And I'm not judging anyone, just giving my honest opinons.
hey sweetie yes it verry well could be am a week and 4days pregnant and i look like am 4months so yes its normal