Ask a doctor on the topic of Gynecology

Question about paternity again

October 20, 2011 | 10,00 EUR | answered by Dr. med. Ralf Berg

Dear Dr. Berg,

I am now quite confused.

I had intercourse on days 4/15+16/22.

I had a strongly positive ovulation test/Persona test stick on day 15, which then became significantly weaker from day 16 onwards.

And on days 15 and 16, I had intercourse... with the desired donor.

My doctor determined the fertilization date to be day 12 of the cycle during the second appointment.

Now you are saying that it was the intercourse on day 22 (even though my cycle was consistently only 26 days long in the months before) that caused the pregnancy...

Is day 22 not too late? Does the estimated conception date even match up?

Could you please double-check my information?

I had intercourse on 4 occasions... each with some time in between.

Another doctor I consulted in May estimated it to be around day 14...

Thanks again... (-:

Dr. med. Ralf Berg

Oh Sorry,

you are absolutely right, I mixed up the dates.

Ovulation was probably between day 12 and 15,

so sperm from days 4 and 22 have no chance.

And most likely, sperm from day 14 or 15 fertilized the egg.

I actually mixed up the dates. Around ovulation, plus or minus 1-2 days, fertilization is usually successful.

I agree with the doctor's opinion from May.

Again, sorry for the mix-up with the numbers.

Best regards, dr. r. berg