Dont mean to worry u but when i was preg it took just over 3 weeks from missed period to show on a preg test, home and docs! I dont expect u would be preg after it not showing but it took me that long to produce the hormone! Do u hav any othrr symptons? I new i was preg straigjt away, alonbg with sore boobs, bloated moods etc! Hope u get the result u want xx