I have a mildly dilated right ventricle and mild pulmonary hypertension can i get pregnant?

a recent echo has shown i have a mildly dilated right ventricle and mild pulmonary hypertension. I am 25 the only symptoms i have are tacycardia (158 bpm) shortness of breath when excercising and slight chest pain and fatigue. I am presantly on a diet to lose 2 stone and have cut down on my cigerattes to 4 a day. Can i get pregnant as it is only mild or could doing so exhasabate the problem?