I am currently 10 weeks pregnant. About a week ago I noticed a muscle twitch in my upper left back. It came and went and various times but now it is pretty contestant and spreading. It has moved down my side, into my arm, it feels like it is happening internally as well. I am also getting random twitches throughout my body here and there. Of course I’ve read it could be ALS. I am so scared, my family will finally be complete and what if I am not here to take care of them. Would ALS progress so rapidly or could possible just be something else.