Am I crazy for this?

I got my tubes tied (they rubber band them closed) last November 2014 an lately I've been having huge baby fever an I kinda wanna try an get pregnant am I stupid for thinking this idea or is this just normal emotions for a tube tied momma like me.. The reason I tied my tubes is cause I already had 5 kids but 4 living an I thought well I'm done after the last one which I had 2 yrs ago.....