are known to cause breast tenderness and enlarged nipples. The actual reason why it is prescrbed is to support the pregnancy
. For you , as you are already on these medications which give rise to symptoms similar to pregnancy, it is difficult to confirm pregnancy unless you get a test done. Till are taking the tablets the periods are likely (not always) to be delayed.
So relax, get your blood test
done. and meet your doctor.
Wishing you luck !