I’m tired of being told everything is fine

I’ve been having headaches, been feeling nauseous, feel like I’m going to faint/shaking uncontrollably and have had pains in my pelvic area and also my heart beats rapidly lastly I barely have energy to keep myself going . This has been going on before taking bc and still currently taking it I also take anxiety and depression medicine with another medicine for PTSD. A month ago I was also considered a prediabetic and have changed my eating habits and lost weight since then. Also I donated blood a month ago for my first time and I know iron deficiency could have occurred though, I honestly don’t know what’s going with on my gynecologist says everything is fine and so does my medicine doctor and it’s pretty irritating to me that I still feel these things. Any suggestions on what could be going on with me?