Overbearing I laws

I am 11 weeks today and my nausea has caused me to actually loose weight this pregnancy. My inlaws came over yesterday and proceeded to call me "chubby" saying I'm already showing and that I'm bulging and can't hide it.  This has made me feel
Very insecure and left me wondering if I should be exercising more and watching what I eat.  I feel like pregnancy is hard enough;  How do you deal with unwanted body image comments?