I’m getting ill every month week before period, happened twice in row now and although it might be a coincidence, symptoms (sinusitis and fatigue) have been exactly the same. I’d like to get my blood tested to rule out any deficiencies. Other than ferritin, b12, vit d, what else should I request to be tested? I am 18 months pp and still breastfeeding so hormones likely still awry so don’t think worthwhile testing hormones? Thanks so much!