She is only 1 month old. All one month old have only their moms they can rely on and feel secure. You have to give her that security. You can wait for another month before resuming your sexual life. But that shldnt stop u from having heart to heart talks or spending time with your husband.
Is she crying while she passes urine or when you leave her to goto bathroom? If it is first case then please consult your doctor asap. if it is second then its perfectly normal. She sees you as security and when you are not visibleshe cries.