1st Depo shot and no symptoms these 3 months and i had unsafe sex for the last 2 weeks now a week later im spotting and tired and urinating frequently I do not have an std or uti so what is it?

Spotting, tiredness and frequent urination are three symptoms of pregnancy HOWEVER!!!!!! Do not panic if this would normally be something to cause u panic, somethings the body can do strange things in reaction to us putting 'strange things' into it. I had Implanon inserted and my body faked a pregnancy. So go figure. Ur best bet is to go see ur doctor and explain ur symptoms. He or she will be able to answer anything more easily and accurately then anyone of us here.