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On average, implantation occurs about 8-10 days after ovulation, but it can happen as early as six and as late as 12. This means that for some women, implantation can occur around cycle day 20 ...
Implantation bleeding occurs between 7 and 14 days after fertilization, [57] and is a small amount of light vaginal bleeding or spotting that can occur in early pregnancy due to the blastocyst penetrating the lining of the uterus during implantation.
Pregnancy-related low back pain and pelvic girdle pain can occur together or separately. The pain is often dull, intermittent, worse in the evening, and usually occurs within 30 minutes of activities like walking, standing, or sitting. [14]
Common implantation symptoms include cramping and spotting, or very light bleeding, but those same signs can also be indicative of a normal menstrual cycle. Implantation symptoms to know when ...
If implantation does not occur, the frequency of contractions remains low; but at menstruation the intensity increases dramatically to between 50 and 200 mmHg producing labor-like contractions. [3] These contractions are sometimes termed menstrual cramps, [4] although that term is also used for menstrual pain in general.
Most ectopic pregnancies (90%) occur in the fallopian tube, which are known as tubal pregnancies, [2] but implantation can also occur on the cervix, ovaries, caesarean scar, or within the abdomen. [1] Detection of ectopic pregnancy is typically by blood tests for human chorionic gonadotropin (hCG) and ultrasound. [1]
The first stage is characterised by abdominal cramping or also back pain in the case of back labour, [13] that typically lasts half a minute and occurs every 10 to 30 minutes. [14] Contractions gradually become stronger and closer together. [ 15 ]
If implantation occurs, the corpus luteum will continue to produce progesterone for eight to twelve weeks, after which the placenta takes over this function. [6] In the absence of fertilization, hCG is not produced and the corpus luteum will atrophy in 10–12 days (Luteolysis or luteal regression).