Finally my sertraline has started to work after 4 weeks, will my serotonin levels even out. gad?

Your feeling gauges: If you are feeling better after being on your medication compliantly then, that is the best indicator that the sertraline is having a positive effect on your system. The exact reason that you're feeling better, however, is a matter of conjecture since nobody truly knows what happens with any of the neurotransmitter levels after taking these medications or how those changes affect individuals.