Use to take Humira off and on for a few years. I stopped taking it around September 2013 for upcoming surgery. I didnt take it for about 5 or 6 months. I took one 40mg shot around the end of March 2014. I had a possible HIV exposure April 14th. Will that one dose suppress my immune sytem enough to affect the production of HIV antibodies if I was exposed? How long will that dose stay in my system?