HI M south indian. Eventhough my trust in god has improved my OCD condition, but my mind has this doubt like is there god-any proof? Another OCD thought?

Faith. . Faith implies that one has to suspend the need for evidence and 'just believe'. Many people stop believing when they realize the stories don't make sense. Others chose to ignore the evidence and have 'faith'. Both people seem happy .
Yes - this may be an. obsessive thought. As much as I believe in God - it is not my role on Healthtap to try to convince you or anyone else of the existence of God. See that you are on Anafrail which is an excellent choice for OCD. Titrating Anafranil (clomipramine) dose may be helpful as well as Cognitive Behavioral Therapy. Take care.