Hi . It seems you are having allergic rhinitis , which has similar symptoms.  But dont use otrivin or any other inhaler without doctors advise . If your symptoms still persists you can take anti allergic e.g levocetrizine 10mg at night for 5days and use nasoclear nasal drops twice  to clear the dust from nose .

Please elaborate your symptoms in bit more detail. Why are you inserting the finger in your nostril? This is not advised under any circumstances. Also prolonged use of otrivin is not recommended. So if you have already used it for 5 yo 7 days, and feeling better now, please stop it Since you are recovering, the only advice to be followed here is steam inhalation 10 min twice a day. No nose picking.