Hi, My Period Was The 31st October, I Had Sex

Hi, my period was the 31st October, I had sex on the 12 day of my cycle which is the 12th and the condom burst,i took lovenelle before 12 hours. I did not have sex after, was expecting my period between the 30th November and the 1st December. My period is 4/5days late. The I took two test showing negative, having cramp like my period is going to come. I have consulted with a pharmacist and she say I would be OK, am i