Hi there I understand your concern regarding OCD. I firstly want to address your misconception  regarding sensorimotor OCD. There is nothing like sensorimotor OCD in any diagnosis system, maybe you would have googled About your symptoms at some point of time or someone might have misled you. Searching for answers and seeking reassurance continuously is a part of OCD itself but the more it's done the more your problems worsen. I would highly recommend you not to Google much about your problems and ask only a psychiatrist or a psychologists about your worries. Nonetheless you need appropriate treatment for whatever worries you, for that you need evaluation and obviously consultation which can be done through any mode ( online or physical). I don't know of any psychiatrist from Kolkata, you can get to know the locality.