Hi I'm a 28yr old women. my last periods was due on 21st june(usually there will b a delay of 2-6 days to a max). i consulted my gyeneac on 23rd june and she has even done a pregnancy test (UPT) which came out to be negative.(I've taken hifenac-P tablets , myoril 5mg capsules and an antibiotic for my ear infection for 5 days after 5th june. tats y my gyenaec has put me on tablets to get my periods). she has given me regestrone sandoz 5mg tablets to be taken twice a day for 3 days. thats over by 26th june. still i didnt get my periods. ive even done UPT yesterday also which was negative. am i pregnant? even if it is will it b harmful?