Does smoking increase your blood pressure? i already have bp problems but does it increase it ?

Yes: smoking indeed increases blood pressure, both immediately while smoking as well as chronically (i.e., with long-term smoking, can increase BP baseline). Moreover, this increases the risk for many cancers, strokes, heart disease, etc. - not just lung diseases - and affects those around you through secondary smoke. I would urge quitting by whatever means, regardless of blood pressure.