For me it took like 2 to 3 weeks(maybe a little more, don't remember exactly.) for the thoughts to subside. Now they come back very occasionally, but I know medicines work on different people differently. If it were me I would either try my best to hold out for another month or maybe call the doctor and ask if there is possibly a general length the side effects is suppose to last.
Suicide is not the answer though. Always remember you have a loving husband that would be very sad to see you go, you must fight it, if not for yourself, then for him!
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Autism is a disorder not a personality trait!
"God grant me the serenity to accept the things I cannot change,
Courage to change the things I can,
and Wisdom to know the difference."