Much interest then was stirred by the possibility that aspirin would be the way to go rather than use supplemental progesterone in a woman who has had a miscarriage. Blood thinning was thought to work with either heparin or aspirin. But it seemed that aspirin was the safest. So low dose aspirin is the new way to prevent a second and third miscarriage is to begin aspirin before becoming pregnant has now been shown to be effective in one study.This group studied women of ages 18 to 40, who had had one or miscarriages, and those who miscarried at any point. Beginning low dose aspirin therapy before conception increased conception rates by 28% in women with a history of only one pregnancy loss second miscarriage such as checking the lining of that baby bed (the uterus) is ready including hormonal checks and infection checks February 2014 Fertility and Sterility
And again the newest 2017 research says that in fact progesterone may be the way to go. In an article by the group including Saccone G, Schoen C, Franasiak JM, Scott RT Jr, Berghella V and published in Fertil Steril. 2017;107:430-438, they specifically were interested in looking at the use of progestogen in unexplained recurrent pregnancy loss (RPL), which is diagnosed when a woman miscarries more than two subsequent pregnancies.
It was always true that other factors needed to be ruled out sat the cause of miscarriage , and further evaluating gynecologic problems like uterine fibroids, uterine polyps, uterine infections, or medication use, lack of vitamins or other nutritional deficiencies, chromosomal problems, or perhaps problems with the male sperm count.