I Started taking an antidepressant about a month ago. I was feeling sick but that went away. Now I am concerned that I may be pregnant. I have sore breasts, my nails are growing well which the last time that happened was when I was pregnant and I only spotted instead of having a real period. I am also sore when I have sex and am not really into it. Could any of these be explained by the antidepressant and should i stop taking it if I am pregnant?