Clomid/period help?

Chelsea • TTC baby 2
So I started clomid for the first time last night 3-7 50mg.    I started my period Saturday: so yesterday was day 3.    Today my period has stopped.   Do I continue clomid?    I'm going to call my doctor tomorrow also but has anyone ever had this happen?  Is it going to mess Things up I'm not sure why my period only lasted 3 days.   I'm a 5 day or 7 day person on the dot!