PIH Or HTN? wt at delivery 59 , now 47kg

Hi Dr I was diagnosed with PIH  just two days before my delivery, for which iv labetalol was given and bp was not coming down so , c section was done, even though i was on labetalol tid on 8th day post delivery i started with severe headache which i couldn't tolerate and obg started with mgso4 for two days then blood investigations n urine tests were done along brain MRI,all were normal,after which i started taking labet TID 100mg and depin 5mg BD,but i consulted physician he changed medicine to telma H 40mg OD,i took medicine for 6weeks n stopped with tapering doses but i was monitoring bp it was normal n at 12th week bp was high 170/100 ,consulted Dr as per his advice I am on Cilacar 5mg BD dose, and i have completed 6months post delivery period n bp is 90/70 almost everyday , got my renal Doppler, lipid profile, lft, rft, urine routine everything is normal, should I get any other investigations and can i stop medicine with tapering doses n continue with reduced salt diet , ht-4'10"