Relapse again !

I need some advice. I am having my fourth relapse in the past four years at the same time again - spring as in Feb/March. I switched to tecfidera from copaxone nearly a year ago but had also stopped taking copaxone a year before that due to injection site issues. The symptoms dont feel as bad as last couple of relapses ie balance off tiredness funny sensations but was hoping the tecfidera would prevent this. I had the choice between that gilenya and aubagio and wondering should i have chosen gilenya. I didn't cos I had shingles before. Sorry for the long rant. Been diagnosed over 20 years and went years with no relapse so dunno why it hitting now...