Victor, Very sorry to hear you missed yet ANOTHER day of work, dude. Maybe that is part of the problem ... you are working way to many hours and your system is getting run down and probably needs the rest to catchup.
Try going down to the local health food stores and get yourself a bottle of colloidal silver ... the danged stuff is very good for most of what might get us sick these days. It is expensive BUT it works wonders. The main trick is you must take it for a bit of time and not stop until everything is well and good again. I took an ounce a day for over four years. It also eliminates the plaque in one's mouth.
I found a cheaper cure, but it damn near cost me my life. That was to roll over in my sleep about 40 years or so ago and trap and hold until dead, a small Brown Recluse spider. It was a bit smaller than a green pea, but it sure did turn out to be a near death experience for me. That bad bug bit me six times around the same area on my lower left eyelid right where the eyelash grows out.
I ended up spending ten days in the ICU down at Emory hospital, another week in my room with NO LIGHT at all allowed in there. AND then another two weeks getting up and starting to walk again. To this day I no longer get colds, the flu, nothing upper respiratory related ... and I mean absolutely nothing. Poison Ivy and other such plants are almost ineffective in making me breakout. And mosquitoes hate me now.
HOWEVER, I compare my experience to one getting shot by a lead bullet just so they might recover and become immune to lead poisoning. In other words LEAVE THE DAMN SPIDER(s) ALONE.