I am 33, currently diagnosed with hypertension and taking amlodipine besylate 10mg, carvedilol 12.5 mg, chlorthalidone 25mg, potassium cl 10meq, and bupropion Sr 100 mg. Are taking these safe if I become pregnant? My general practitioner said yes but what I have read online says amlodipine in particular is class c? Is there a different drug I should be taking?