It's perfectly fine to enjoy ejaculation - both for the man and the woman. Many Tantricas do not delay ejaculation longer than a single lovemaking session. Much of the emphasis for ejaculation delay past a single lovemaking session comes from Taoist practice where it is intended as a health benefit, particularly as a man ages.

The point to remember is to build your sexual energy and move it through your body and your lover's for divine connection and mystical experience. For men, it is often easier to do this by delaying ejaculation. We consider it to be a personal preference and encourage men to experiment with delaying ejaculation only during one session and delaying it for longer periods and then doing what they find most beneficial. Many, but not all, of the men we've worked with find they have more stamina and desire and sexual energy to work with if they delay their ejaculation over a period of time. Al prefers to do this–but he certainly does enjoy an ejaculation when he does have one–and we make a celebration of it, after all it is a "fountain of life".

Many body fluids are considered to have healthful and energetic properties: saliva, secretions from a woman's breasts, her yoni fluids, woman's ejaculate as well as men's ejaculate. So enjoy and share all of them as you make love. By the way you may be interested to know that a recent study by the State University of New York found that women who were directly exposed to semen were less depressed than women whose partners used condoms. Researchers think this is because mood-altering hormones in semen are absorbed through the vagina. Isn't it interesting that modern  science is agreeing with what ancient sacred sex practices already know!
 
Collecting the semen and drinking it recovers a very small percentage of the energy lost in the ejaculation. There is some energy gain for
the one who orally consumes the semen. Some of that gain could transfer to the unborn fetus. Certainly there would be no harm. There is also a substantial energy gain by absorption through the vagina for the woman when ejaculation takes place there. But there is no avoiding the considerable drain on energy that happens with ejaculation and this gets more serious with advancing age for the male.

You can have sex up until the actual birth, providing you are experiencing a normal pregnancy without any complications. Any position that does not place pressure on the woman's stomach is acceptable. The baby should benefit from the love and sexual energy generated by lovemaking. A really important element is your fitness level - do lots of walking and of course many pc squeezes!