I am now 20days late for my period, I was due on the 30 th sep, I keep track of my periods and no my average cycle is 35 days.I have done 3 pregnancy test and beta HCG test all are negative.A little bit more information for you, I am 24 years old my weight 56, I have not been stressed, I have been eating as usual and have done.I have been getting pregnancy symtoms. I have been prescribed Regestrone 5mg for 5 days with doctor advised.please advice what happened...?Thanks