i had intercourse with my dh on 20 may then came on the 21 but i am now 3 weeks late for my period. my cycle has been regular for over a year now so could i be pregnant or do you think it could be because i have not been feeling well with my personality disorder this week, it doesnt normally effcect my cycle. might sound sill but its because it took me 4 years too concieve my other dd so thats why i am wandering what people think whether its worth checking it out or whether i am over reacting