Silvia Azaña, an embryologist at inviTRA, explains in this video whether low ejaculate volume may be due to a previous ejaculation:
Yes. When a small amount or low volume of semen is ejaculated (hypospermia), it may be because the man has ejaculated previously, without allowing sufficient time for the semen volume to recover.
Therefore, when a semen analysis is to be performed, it is recommended to abstain from ejaculation for 2-3 days in order to correctly assess semen quality.
Similarly, when trying to conceive, it is recommended to have sexual intercourse every other day around the time of ovulation, to allow time for semen quality to recover.
Read the full article on: What Is Hypospermia? – Causes, Symptoms & Treatment ( 59).

Silvia Azaña Gutiérrez
B.Sc., M.Sc.
Graduate in Health Biology from the University of Alcalá and specialized in Clinical Genetics from the same university. Master in Assisted Reproduction by the University of Valencia in collaboration with IVI clinics.
License: 3435-CV