I was put on 50mg of Sertraline yesterday, I took it at 6pm yesterday and by midnight I was feeling like my body was vibrating and I had even more trouble sleeping than normal, today I have had the same experience, but now my heart rate is elevated and I feel like I'm having cold sweats, I generally feel like I'm buzzing without feeling happy, I feel okay in myself and better than yesterday but I'm concerned because I got told that i shouldn't start feeling a difference for a few weeks, is this normal? I feel like I'm getting more and more anxious