Period late after using clomid twice

Dear everyone,

After getting off the pill I did not get my period for five months. I then had two 'normal' periods and one smaller before I started clomid (pergotime in my case). I used it for two consecutive periods without getting pregnant, and my husband and I decided to try again ourselves without any help. However, my 'own' period has not returned yet, and now I am worried that the clomid has screwed up my cycle again - even though the doctors promised that this would not happen.

Have any of you had similar experiences?

Cheers, M