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Is it safe to have sex when pregnant?

Is it safe to have sex when pregnant FAQs

Is it safe to have sex when pregnant?

Is it safe to have sex when pregnant is a very common question and topic, especially for first-time Mums. Most women who are experiencing a normal and regular pregnancy can continue to have sex until labour starts or their water breaks.

Does sex during gestation harm the baby?

No, sex will not harm your baby. He is protected by the uterus and its strong muscles, the amniotic sac and the mucus plug that blocks the cervix from the exterior. Physiologically, the penis does not go beyond the vagina during sex.

Can having sex trigger labour?

If you are having a normal pregnancy, having sex will not begin labour or produce a miscarriage. Yes, orgasms, like nipple stimulation or the prostaglandins found in the semen, can cause light, temporary and harmless, uterine contractions. Having said this, sex is recommended by the doctors in pregnancies that have passed their due date to trigger cervix changes and labour.

What are the best positions to have sex?

As long as you are comfortable and the pleasure is mutual, most sexual positions are fine during pregnancy.

Are condoms necessary?

In the case of having more than one sexual partner or choosing to have sex with a new one during gestation, you definitely need to use a condom if you want to prevent having a sexually transmitted infection. If your regular partner has one of these infections, also use a condom.

Is oral sex safe?

In most cases, yes. But if your partner has an active sexually transmitted infection represented by a lesion in his mouth or had one of these in the past, you should avoid receiving oral sex. Also, keep in mind your partner’s HIV status, due to some evidence that suggests this virus can be orally transmitted.

When should you not have sex during pregnancy?

There are a few medical conditions in which sex (anything that can produce an orgasm, not just intercourse) has to be reduced or avoided altogether. Your doctor may advise you not to perform any sex in case of risk or history of miscarriage and/or preterm labour, vaginal bleeding or discharge, contractions or cramping without a known cause, early dilation of your cervix, placenta previa, multifetal pregnancy, etc.


Nuchal Translucency

12-14 weeks


Anatomy Survey

21-22 weeks


Later Dating

10-17 weeks


Gender Scan

19 weeks onwards


Growth & Well Being

22 weeks onwards


Post Dates & Liquor

40 weeks onwards


What Our Patients Say

Gráinne Macken

This is my second visit to Merrion Fetal, I was very pleased on both occasions. Lovely quiet waiting room, appointment was on time. The 20-week scan is very detailed we enjoyed watching our baby on the large TV screen. We got some beautiful photos. The nurse was very pleasant and talked us through all the measurements and anatomy. I would highly recommend this scanning clinic.”

Áine Gibney

I had the best experience at the Merrion Fetal Health clinic for my 20-week big scan. The staff were so friendly and so nice and the lovely lady who did my ultrasound scan was amazing. She was so thoroughgoing to absolutely everything and gave me such reassurance on how my baby was growing and developing. I would recommend any Mother to be to attend here if you are looking for a comfortable, reassuring and super pleasant experience.”

Linda O'Sullivan

Highly recommend! We had an early scan due to a little scare at the start of pregnancy and then another at 12 weeks to make sure all was good again. Helen who was scanning on both days was fantastic. We felt totally relaxed and un-rushed while she took her time finding the best angle of baby to get us the clearest pictures as keepsakes all while making sure everything was perfect with baby. She reassured us throughout and I can honestly say it was the best money we ever spent getting both scans done.

Please let Helen know we are 18 weeks now and flying along Highly recommend!



About The Clinic

Merrion Fetal Health Pregnancy Scans Dublin 2

About The Consultants

Dr. Rhona Mahony

About The Team

Pregnancy scans lead sonographer at Merrion Fetal Health

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18 weeks pregnancy scan facial profile Merrion Fetal Health

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All articles on the blog and website are intended as information only. Please do not consider any of the information provided here as a substitute for medical advice. At all times seek medical advice directly with your own doctor and medical team.


This website was formerly Merrion Fetal Health. The clinic has undergone a rebrand and is now known as Merrion Ultrasound.