Blood pressure

[FirstT1meMum]

I will be 8 weeks PP tomorrow.
At 36 weeks pregnant I was put on labetalol due to raised BP. I had my DD at 37+4, they suspect my placenta was possibly failing or I had pre eclampsia but was never tested and never had any protein.
Since around 4 weeks PP they have been trying to reduce my labetalol to take me off completely, however at my last check my BP had gone back up! It seems so irregular and just all over the place. I can go from readings of 118/83 to 150/87 😫
Just wondering if it's normal this far on to still have BP problems and how long it normally takes to rectify or of it ever will!