Suggest Treatment For Tiredness, Pounding Heart Rate And Anaemia

I ve had a lot of water retention and I found out I m very anemic lately I ve been feeling very tired and it s hard for me to do little things like walk around climb stairs and things like that. My heart doesn t hurt but it pounds very hard and it s just been hard to do minimal things. I had a cheat X-ray and my heart was normal size what could be happening