Hello Doctor...we Are Trying For Our First Child..Iam 34 Years

hello doctor...we are trying for our first child..Iam 34 years old. I underwent ovulation study and was on Duphaston and Susten from 18th day of my cycle for 15 days which I completed day before yesterday. Now, my period is late or am I pregnant...a bit confused about!!!! do these medicines delay periods? today is 35th day of my cycle