Brief Answer:
Wait for 3 months at least.

Detailed Answer:
Hello,
Thanks for trusting us with your health concern.
A miscarriage during first trimester mostly happens due to chromosomal defects in which the fetal heart beat does not appear.
Following abortion, next 1-2 cycle may be irregular but after that, period becomes normal as like previous in most women. Therefore, one should start to plan for conceiving after 3 cycles at least after regularization of period.

If period is regularized, then you should calculate ovulation time that occurs approx 14 days before next due date. Ovulation prediction kit is also very much helpful in context to predict ovulation and you should prepare for that day for unprotected sex for highest possibility of pregnancy.

In these 3 months, you may take folic acid & vitamin E supplements with healthy diet.

Do some basic things also to improve fertility:
1) Avoid stress by yoga/deep breathing regularly (20-30 times).
2) Drink plenty of fluids/water and eat leafy vegetables & fruits.
3) Control body weight by regular physical exercise.
4) Maintain personal hygiene and need proper sleeping.
Basically pregnancy depends on proper timing of ovulation & unprotected sex. After abortion, you are always in risk for next one but it varies women to women. Therefore you should wait at least 1-2 cycle to regularize period and after that you can plan pregnancy.

Before planning next pregnancy, it is better to undergo some investigation to rule out causes of previous abortion like TORCH profile, Blood gr & Rh typing of both (to check Rh incompatibility), Blood sugar (PPBS), Test for chromosomal abnormality, Progesterone level after ovulation etc.

Taking folic acid & vitamin E in preconception period are very much helpful to improve fertility & in brain development of fetus during pregnancy.
Please feel free to discuss further. I will be glad to answer the follow up queries that you have.
Wishing you good health.
Regards.
Dr. Rakhi Tayal.
For future query, you can directly approach me through my profile URL http://bit.ly/Dr-Rakhi-Tayal

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Brief Answer:
Details below.

Detailed Answer:
Hello.
Thanks for writing again.
The uterus usually cleans on its own if spontaneous abortion happens. Surgical procedure D&C may be needed in some cases.
The periods will regularize on their own. In case the periods are irregular then hormonal tablets may be needed after consulting your gynecologist.
The cause of chromosomal defects is not known. Genetic studies of both of you can help in detecting cause in case the abortion happens again.
Hope my answer is helpful.
Do accept my answer in case there are no further queries.
Regards.

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