Rachel is exaggerating to show how upset she is about not having children. AT: "I will feel completely worthless" (See: [[rc://en/ta/man/translate/figs-hyperbole]])
This is a rhetorical question that Jacob uses to scold Rachel. It can be translated as a statement. AT: "I am not God! I am not the one who is preventing you from having children!" (See: [[rc://en/ta/man/translate/figs-rquestion]])