Hi My Name Is Stacy An I Hope You Can

Hi my name is Stacy an I hope you can help me. I get terrible headaches every single day for about a month or so but the symptoms vary. Some days I will have pain on only the left side of my head from the temple down to the nape. It may be on the entire left side of my body where my arm feels heavy and like I am not going to be able to lift it. I also feeling pulsing. Other times along with the headache the backside of my left eye will be in A LOT of pain. The headaches could last between an hour to all day. My head will also feel heavy and holding my head up can be difficult. At times I also feel a shortness of breath and most times I get a feeling of not being mentally present of where I am and can barely walk in a straight line without feeling like I am going to fall. I have talked to my doctor about this and was prescribed some medication for tension headache but it doesn't really help.