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From your query it appear that you have multiple anxiety
symptoms. These problem increases perceived stress in routine life, sleep, appetite and activity level. You already have family history of thyroid dysfunction
in mother. Thyroid dysfunction and anemia decreases response to anti depressants treatment so get it evaluated and treated.
I think your anxiety symptoms are not fully controlled with zoloft, may be due to above reasons. Apart from that zoloft itself lead to decrease sexual desire. It is better to seek consultation from specialist for such problems like psychiatrist
so that your anti depressant can be changed.
Apart from that aerobic exercise
, healthy diet and supportive counseling will help you.
I hope this information has been both informative and helpful for you.
Wish you Good Health.
Dr. Ashish Mittal