I currently just started 20mgs today. I was on 10 mgs for 2 weeks before today and i seen no difference. So basically ive been on prozac for 2 weeks and 1 day. I suffer from gad, insomnia, and ocd. My obssesive thought is that someone is going to hurt me while im sleeping. (Thats why i cant sleep). So my ocd is checking the house for safty. Please help! Explain what prozac did for you.