Hi, my wife is 35 weeks pregnant, last week she had a CBC test in which her platelets count was 105 now yesterday we had a test again, but no platelets counts come, reason given by lab doctor is her platelets has clumps/clots due to this its coming, or might be below 50 level.. my question is what should I do now? Or does it harm baby too? As now we don't have much time left.

See here for some information on the platelet count during pregnancy:
http://www.babycentre.co.uk/pregnancy/complications/lowplateletsexpert/

Platelets cause blood to clot. If the count is low, it might result in excessive bleeding during delivery/cesarean and the doctor delivering the baby will have to keep that in mind and take precautions.
You should discuss this with your wife's doctor/midwife.