It is normal to have intercourse for a month without using contraception and not conceive successfully. Conception is a complicated process, and there are many factors that affect it, so it is not certain that conception will be successful after one month of intercourse. If you want to get pregnant during intercourse, you need to have ovulation in your ovaries to have a better chance of getting pregnant. If you have intercourse without contraception, but your ovaries are not ovulating at that time, it will not lead to pregnancy. If you want to get pregnant, you can monitor when your ovaries are ovulating and then have intercourse to see if you can successfully conceive. If you have intercourse for more than a year without contraceptive measures, you are infertile.