I had said yes to the trial and got a call on Wednesday from the organisers. One criteria was that one shouldn't have covid in last 90 days. Well guess very next day I woke up with sore throat. I had sore throat for three days and now I have stuffy nose. No fever or other symptoms. Lfts have been negative. I was supposed to see someone from the study on Tuesday but no I don't know if I have covid or cold. I give them a call tomorrow but it seems I jinxed myself big time.