Is it true that having too much sex can lower your chances of getting pregnant?

Timing is everything: Possibly; if you and your partner are looking to conceive a child then the timing of sexual relations with the onset ovalution is crucial! presuming normal sperm counts are present(and you have a wililng partner) than prepare for parenthood. Good luck in your endeavors!

No: Sperm are produced constantly and whatever is in the ejaculate was produced in the past 80 days. Some men may have decreased counts per ejaculate with frequent sex, but the overall amount of sperm released is the same or greater. Studies have shown that pregnancy rates are highest with daily intercourse, and every other day is a close 2nd, the rate drops with more infrequent timing.