First cycle after egg retrieval

My doctor is having me due a natural cycle frozen embryo transfer after having my egg retrieval. I have my baseline ultrasound tomorrow. My question is my period is like super light like more then usual I am on day three and it’s like my bleeding has completely stopped and even on the two days I did bleed it was never enough to fill a tampon and mostly like just enough for a liner really and when I wiped.. my nurse had warned me my period might be weird and heavier then normal but should I be concerned it’s super light??