How serious is pregnancy induced hypertension?

I was diagnosed with pregnancy induced hypertension around 23-24 weeks (I’m 33 weeks now), but I just recently was put on medication, and the doctor says that he wants to start seeing me every week until I deliver to do a fetal stress test. After hearing this, I naturally started to worry, but my fiance doesn’t seem to think it’s a huge deal. Am I over-reacting, or is he under-reacting? What’s the worse case scenario with this?