Days of spotting, then one day period

So, after a missed miscarriage in September and a chemical in November, plus a bunch of BFN’s. this past cycle I started acupuncture and taking herbal supplements to prepare for a healthy sticky pregnancy. I told my acupuncturist that I always spot brown for a few days before my period and I have been told many times that I am slightly anemic by all different doctors. Acupuncturist had me start taking Floradix daily (iron supplement) and encouraged me to eat bone broth, kale, cauliflower, etc. I followed her instructions and also did dry January (no drinking). But then I spotted for FOUR days this cycle before getting my period that only lasted for ONE day. What the hell? Insights?