Hello.I can tell you that your physical symptoms are secondary to your stress
about your orientation and inability to disclose it.
You need to consult a psychiatrist
regarding your feeling for two reasons
Firstly , it will relieve your tension by disclosing about it in a confidential and accepting environment .
Secondly he can tell you the mean of calming ourself by therapy and if required medication. Along with that he can assess your level of conviction about your orientation. Once its become clear and you are calm you can deal it more confidently and can divulge it to other. Before disclosing about it you should be prepared to deal with the expected consequences and to continue in the direction you feel appropriate for you.