I'm not an expert on Humaworm. You should go to the Ask Humaworm forum.
Whether coincidental or not, I started getting significant irregular heartbeats after about 3 weeks, but, then, I am also at an age where that can happen, so I wouldn't necessarily draw any decisive conclusions from that.
I would hardly call the difference between 5 minutes and 20 minutes as significant, though. Just my opinion. Besides, Humaworm is about treating parasites, not viruses.