TTC for 1yr and 9 months now and having crazy periods! Need advice!

I have been TTC for 1yr and 9 months and it is all starting to mentally effect me I am feeling. I need some advice or clarity to what may be going on with me since I am running out of Drs. locally to consult. My periods have been super heavy and short while TTC. They went from 5-6 day long to 2day onslaughts goes MIA for day 3 and 4 and returns on day 5 with a light flow that is so dark it is black. I use a cup and this cycle I tracked my day 2 of my period was a blood loss of about 600-700mls within less than 24hrs. I am iron deficiencently anemic and aware. I take supplements and eat whole foods high in iron. Yet, I get light headed, dizzy/faint, and can't stand or afraid I will blackout faint. (I have before.) I also turn pale as a ghost. For the record, it took my partner and I 6 months to TTC my first son. I am getting so sick of this- this past cycle I have just become super depressed and feeling hopeless. I have been crying everyday since this cycle has started. I need advice!