Suggest Remedy For Bad Taste In Mouth As Well As Cough And Allergy

Hello, I am a 33 year old female and have always been considered healthy. Slim, active, low blood pressure, etc. Over the last few months I have had off and on symptoms that come and go but have been more frequent the last few days. The symptoms are: metallic/bad taste in mouth, chest feeling tight (like it is hard to get a full breath sometimes), yesterday I had tingly feeling in my left leg and arm, and that same night I had a hard time getting to sleep because I felt like my heart was racing and had the slight tight chest feeling. I am not a smoker and only have an occasional alcoholic drink. I had one alcoholic drink a few hours before the night that I mentioned not being able to sleep well. I don t consider myself a stressed out person, however I am always busy and trying to do lots of things so maybe that is subconsciously making my body think I am stressed. Over the last few years I have always had occasional phlegm that gets in my throat that I cough up and this happens any time of year regardless of if it is allergy season or not. Today the only symptoms I still have are that I still have the bad taste in my mouth and an overall tired and very slight light headed feeling. I get an occasional headache but not at a frequency that to me seems abnormal. Thanks for any thought you may have.