Pregnancy symptoms dissapeared?

i thought i might have been preg. for 3 weeks straight i started getting all the symptoms one day and they didnt let up til this week.i am due for my next af this coming wed. but the only thing still bugging me is a bit nausea. i dont htink now that i got preg because all my symptoms dissapeared. has that happend to any of you just before testing and still got a bfp? what happend to your symptoms?