Help...

Chloe

Hello, i was due to have my period Tuesday, on Tuesday the pregnancy test said negative, however it is now Saturday and I still have no signs of coming on... last month I was on time although it only lasted 48hrs unlike the 5 days I usually are on and it was quite watery in last 24hrs and I didn't loose much blood... i am never usually late always come on within the day but this time I haven't, shall I re-test at home or wait until Monday for the doctors?😊