I have read for some it is possible to have only one outbreak. So lets hope that is your case. My first outbreak was 1 year and this is not unusual. My pattern had been 6 months on and off after initial year, but cilantro stopped my last outbreak. I am hoping for you that your initial outbreak is finishing. For many, including me, the 1st outbreak is the most painful, itchy and extensive. So sorry you can't try the cilantro, but you can hope that if you do have a recurrence it will not be as violently severe affecting your every moment.
I image you have explored with your doctor increasing your dosage of blood thinner and with that perhaps ingesting a small amount, 1/2 a cup of cilantro and have your blood monitored. Most of us ingest more, but perhaps it is unnecessary to take in so much.