Hi, about two weeks ago I suddenly started to have intense anxiety. I couldn't sleep, eat, I couldn't stop thinking about the things that were making me anxious, I couldn't concentrate, I had heart palpitations, my heart was constantly racing, I avoided things that used to make me happy because they would just make me feel worse, I started skipping classes (I'm at college), I had headaches often, I lost all motivation, I never wanted to leave my apartment, I had a constant stomachache, and had feelings of hopelessness. I went to the doctors because I have suffered from anxiety and OCD before and thought it could be coming back, and he told me that I'm suffering from anxiety, depression, and a bit of OCD. I'm currently taking Sertraline, aka Zoloft, (50mg). I've been taking it for a week now and I honestly have been feeling pretty good for about a week now. Is it possible that the zoloft is already working? My doctor said that it could take 4-6 weeks to start working.