Will I ever get better on sertraline?

I’ve now been on Sertraline for 28 days. 25mg for 25 days then upped to 50mg. Side effects have been hell but I’ve kept with it (prescribed diazepam when necesssary). However past five days had two excellent normal days, though followed by a bad one. Told this is normal by my doctor! However beginning to feel more hopeful but 28 days does seem like 28 weeks. Have lost almost a stone in weight. Am keeping positive!! Take each day as it comes.

Hi, Day!
First and foremost talk to your doctor... it's very important to report side effects, progress, or lack of progress.
Side effects like you describe are very common when first starting an antidepressant but while 50mg is the standard initial dose some people need a lower dose. This could make your metabolism's adjustment to the drug a little smoother. Generally, side effects resolve within days to a week or so.
Also, your pharmacist can suggest an OTC remedy at least for the nausea that's compatible with the sertraline.
You don't have to do this alone!
Best regards and you should be feeling better soon now.