been on sertraline for 10 months and thought i'd try to wean myself off them.went from 100mg to 50mg about 2 weeks ago but have been feeling strange for about 4 days or so.headache,tired,dizzy,light headed,stomach ache.managed to go to work but knackered after 2 12hour shifts.is this the tablets(or lack of)or im i just ill.also still breastfeeding ds will he suffer from side effects from my medication being cut?