Question:
Should one refrain from marital relations in the first trimester in lew of Chazal's warning on the matter?
Answer:
One should not refrain totally because it will cause him to have improper thoughts, therefore he should have relations, but less frequent, i.e. instead of twice a week once.
Sources:
Sefer Chasidim 390, Chashukei Chemed Nidah 31a, Poskim.
