The types of treatment for subfertility (inability to conceive after 1 year of unprotected sexual intercourse) range from
1) just giving yourselves more time; it is said that 80% of couples conceive within 1 year and another 10% in the subsequent year; that equals 90% over 2 years will get pregnant; so if you are in your early 30's, you can afford to wait a bit longer. Certainly, if you have already tried for over 2 years or are very very anxious about it, you should choose more active forms of treatment as listed below.
2) Clomiphene citrate tablets ("Clomid") to help induce ovulation (release an egg from the ovary) in women who are suspected to have ovulatory problems ie. with irregular or infrequent menses, those who are overweight and a BMI of over 25 (the higher the more severe). If anovulation is the sole problem, then expect a success rate (pregnancy rate) of around 50% over 6 months. Some books quote an even higher figure.
3) Intrauterine insemination (IUI) with ovulation induction (can be with clomid or FSH injections) is a simple form of assisted reproductive treatment (ART) and is suitable for couples with mild sperm abnormalities, mild endometriosis, unexplained infertility, and suspected cervical mucous problems. This is where sperm is washed and filtered for the best sperm and infused back intot he womb during the ovulation period. It's success rate is around 15% depending on various factors of which is quantitiy and quality of sperm and age of woman. One needs to have at least one unblocked fallopian tube and 10 million mobile sperms.
4) In-Vitro-Fertilisation (IVF) or test tube baby which is formation of an embryo in a petri dish in a lab and replacing these embryo(s) into the womb. Success rates up to 30% per try. Very labour intensive for all parties and very expensive. It is the last resort if all else fails.