hello doctor... I m a pulmonary hipertention patient,I did heart surgery (something called valvuloplasty) in 2003,yet I stiil felt the uncomfortably feeling inside my chest,but since I take nigella sativa,that uncomfortable feeling been reduced... I read in the internet,that pregnant lady shouldn t take nigella sativa..I m wondering whether I can still consume this or no as now I m pregnant... thank you very much