Experience with post-partum hypertension??

My blood pressure pre pregancy (post wls) runs between 90/50-106/60.  During pregnancy it was running around 110/70 the entire time, after birth it was back down to 90/50 the first couple of days--I had a c-section and by the time I left the hospital it was running 120/66--but about 10 days post op it went up to 120/78 and at my 2 week check up it was 140/90 at OB office-- I have been watching it for the past week--and at home it has gone up to 134/88 consistently--went in to OB today (3 weeks 1 day past delivery) and it was up to 152/94 so I am now on aldomet twice a day--just wondering if anyone else has experience with this and how long it lasted.