I have irregular periods. Iam pregnant.

I have irregular periods, When i consultant to a doctor last month, she said I have PCOD problem and During my delayed period she suggested me CLOFERT tablet, Some injections to concive easily and PCOD Tablet and After a week she gave me another tablet MEFRATE,. Now my date is 5th, So is there a chances of pregncy or Normal monthly cycle And also Iam planning to travel on 15th April to out of country for 15 days... and I dnt want to be in Periods during that time.. If i dnt get my periods by 8th.. i wantd to take tablets to stop my periods for 15 days. as iam not sure Iam pregnant or not.. so during this time if i take a tablet to stop my periods will that be any affect on my pregency.. If iam pregnant.. if i get periods by 8th it will be finish by 14th Please advise what to do wither get periods on time if iam not pregenant or sme tablets to stop periods aswell as protect pregnency if incase iam pregnant .. I cant travel to place with periods where Iam traveling