Our expert says:
I will try to respond to each, but advise you also to repost your questions to the gynaecologist who specialises in female reproductive health (go to Health 24 home page and look up the 'gynaedoc' on the list of experts).
1. Sperm can live up to 5 days in the right conditions, so if the menstrual cycle is just beginning, there is a chance that a mature egg could be making it's way up the fallopian tubes during that period. The ovulation cycle is also not always that predictable, so the safe response is that there is always a risk if you are not protecting yourselves...but if she is on the pill, and takes this reliably, then it is a good prophylactic. The safest is always to use a condom.
2. The chance is less when ovulation has not yet taken place, but one cannot say that there is no risk! A woman does not produce new 'eggs'/ova; all her ova that will mature are already there from birth, she just has one (or sometimes more) develop with each menstrual cycle.
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