Is It Safe To Take Flustat Tablets In Suspected Pregnancy?

am 23 year old female and am having difficulty in breathing because i feel more pressure and pain in the chest when breathing in. had my last period on the 22 january and i am not sure if am pregnant or not. went to the clinic today and i was given flustat tablets (lime and white color).. is it safe to take dose drugs since am not sure of pregnancy, and i disperately want to be fine.