There is no chance of pregnancy
until sexual intercourse occurs (insertion of penis with ejaculation). So don't be worried about the matter and practice safe sex in future.
Above described symptoms are suggestive of "PRE MENSTRUAL SYNDROME" (water retention,bloating
etc) which is quite common in some women.
Take low salt healthy diet, meditation
sometimes and do light exercise...that helps more and wait for period.
For more suggestion contact with me...my id: firstname.lastname@example.org