I received a depo shot november 4th my fianc was in prison came in town and i had unprotected sex around dec 14 today dec 18 i have been throwing up?is it depo symptoms or pregnancy should i be worried or not

Probably not: As long as you received your first Depo Provera (medroxyprogesterone) shot within the first 5 days of a normal period starting it is immediately effective for contraception. Also, as long as you have been getting all of your injections on time, it has a very low failure rate. More likely you have a virus but do a pregnancy test to be sure.