I am on day 6 taking mg but am getting worried about the side effects to be honest I ain't felt any but am worried about reading about heart palpitations does this happen to everyone I have severe depression and anxiety also intrusive thoughts was on Prozac for 15 years but they just stopped working have been on quite a few tablets over the last 15 months but they have not worked I do feel slightly better taking these but am worried now about the side effects has anyone had a positive reaction to sertralin I am due to increase to 100mg in two days but reading some of these is making me nervous