Is it possible that when I was on clomaid I ovulated for only one day? Normally ovulation continues for 3-4 days. I have been doing ovulation test everyday and only once it was positive. (no more clomaid) I hoping if that was true I should be preganant or have periods in a week. Is it possible that my egg is not mature enough to get fertilized? Please help.
There are many reasons why periods become irregular. Have you had a weight change since the time when your periods were regular? Weight increase can sometimes lead to irregular periods, and to a condition called polycystic ovary syndrome (PCOS) which presents as irregular periods, sometimes excessive hair growth or acne, and sometimes elevations of testosterone and other male hormones.
D&Cs do not cause infertility, except in very rare situations where the D&C leads to scarring in the uterine cavity. This is very rare, and not anyone's fault if it occurs. It is unlikely that your D&C caused this for several reasons: 1) it is very uncommon, 2) you still have periods sometimes - with scarring after a D&C often periods stop or become very very light, 3) you have told be clomid made you ovulate but you did not get pregnant. Thus I am assuming that, while you were on clomid, you were having regular periods.
Occasionally elevation of a hormone called prolactin, or abnormal thyroid gland function, can be associated with irregular periods.
I would recommend that you see a reproductive endocrinologist/infertility sub-specialist. REI doctors have, in addition to an ObGyn residency, taken an additional 2-3 years to specialize in infertility. They will be able to order some hormone tests that will help explain if there is a cause for your irregular periods of late. Also, they will be able to decide if you should try a different type of fertility drug than clomid. If clomid fails, then there are injection fertility drugs which are the next step, which have a really good chance of success.
Hopefully an REI physician will be able to answer your question about why your periods are irregular, and what the next treatment step is. At age 34, your chances should still be very good!