Trich or BV

[Janicka11]

hi,i have been diagnosed with trich about 2 years ago after having it for at least a year,got treated with single dose of metronidazole,the symptoms seemed to clear out but came back with the next period.i couldnt get reinfected in the meanwhile. Next time about a year later still having the smelly discharge i took flagyl. The symsymptoms disappeared for another 4 months and came back again. It is possible i have been reinfected somewhere along the way. So this time i took a single dose of metronidazole again.symptoms seem to clear out and now on my 4th day of period i had a lot of itching and the fishy smell came back. Is there anything as chronic trich or could it maybe be BV or just a yeast infection? I dont have access to the healthcare at the moment.on the remote island and dont want to take another load of metronidazole.i got tested for everything 3 months ago and everything came negative.that was without the time with any problems or symptoms. would you advise?thanks