Hi, I have been on cerazette for about 8/9 month now and haven t had a problem with it, i was on penicyllin antibiotics, i took my last set of antibiotics on wed 5th january and had intercourse early wednesday morning, I was worried i could be pregnant, so today I took a pregnancy test and it was negative, is there need to take another one at a later date or do you think i am worrying far too much.. Thank you :)