Some couples find having sex very enjoyable during pregnancy, while others simply feel they don't want to.
You can find other ways of being loving or making love.
It can also be uncomfortable if your partner penetrates you too deeply.
It may be better to lie on your sides, either facing each other or with your partner behind.
Travelling in the final months of pregnancy can be tiring and uncomfortable.
Some medicines for treating stomach upsets and traveller's diarrhoea aren't suitable during pregnancy. Find out about a healthy diet in pregnancy, and foods to avoid.
It's perfectly safe to have sex during pregnancy unless your doctor or midwife has told you not to. Your partner's penis can't penetrate beyond your vagina, and the baby cannot tell what's going on.
So, many women find the best time to travel or take a holiday is in mid-pregnancy, between four and six months.
"Travel during pregnancy is a concern for many women," says Sarah Reynolds, a consultant obstetrician and gynaecologist at the Bedford Hospital NHS Trust.