I am breastfeeding my 3 month old DS. I have to have a nuclear Scan for my Thyroid next Tuesday, and have been told I cannot breastfeed for 24 hours. Has anyone else had to do this, and have some advice? Any advice how I can rapidly increase my milk supply, so I can express enough to last 24 hours. I only have 4 days to do it in, and am not sure if this will be enough time. Guessing I need about 800mls, and all I could get today by expressing was 90mls.