Ok I have been off the shot for 2 months after taking it four other times and im having pregnant symptoms i.e. boobs swelling and the veins showing, throwing up or just feeling sick after certain meals and my back has been hurting. But I went to the dr for my boobs worried and they took a pg test and it came back negative. Are their tests accurate??? Even after I took the test the dr asked if I could be pg?? It was a pee test.