Labs and breastfeeding

Court

Hi! I’ve been breastfeeding by exclusively pumping since day one with my 4.5 month old. I am not sure if this is too off topic, but can certain blood tests be out of whack while breastfeeding?? I just had all my labs drawn for my postpartum visit and my blood sugar was very low (right after having a protein shake), cholesterol is high, and my TSH is insanely high. I’ve never ever, even during my pregnancy, had results like this. Wondering if anyone has any insight or advice while I wait to speak to my doctor on Monday…? I’m an under-supplier if that matters.