7 Weeks Pregnant – Mother’s Progress

It is very natural by the time you are 7 weeks pregnant to experience a range of conflicting emotions throughout your entire pregnancy and these may start to become a lot more noticeable this week. Don’t be surprised if you have a mixture of misgivings, joy and anxiety in these early weeks and don’t feel guilty about it either. Irritability, weepiness and mood swings can also be accompanied by indecisiveness, making you feel incapable of being purposeful or making to simplest of decisions.

7 Weeks Pregnant Symptoms – Pregnancy Hormone Changes

Try to relax and remember that this is quite a normal part of being pregnant. The worst of your symptoms will usually ease up after the first 12 weeks once your baby has passed the ’embryonic phase’. Your body is currently in overdrive, working against the clock, to put in place the highly complex and fascinating building blocks of life itself. In order to achieve this it is flooding your body with a multitude of various pregnancy hormones that will ensure the survival and well being of your pregnancy.

The placenta and the pituitary gland at the base of the brain are responsible for the production of each of these pregnancy hormones and here’s what they do:

  • Progesterone – This hormone can result in various side effects, such as nausea and faintness as it lowers blood pressure, slows the digestion down, raises body temperature and increases your breathing rate. It plays an important part in body maintenance as it prepares you for pregnancy, your breasts for breastfeeding and your body for labor.
  • Estrogen – is responsible for strengthening the walls of your womb to cope with the powerful contractions of labor and softens the body’s tissues allowing for the ligaments and joints to stretch which can also lead to varicose veins and backache. It stimulates the growth of milk ducts, causing your breasts to feel sensitive.
  • hCG (human chorionic gonadotrophin) – This stimulates the thyroid gland to continue producing thyroxine. hCG is produced by the placenta and is unique to pregnancy. It ensures the embryo’s viability by keeping the lining of your womb in tact so that it is not flushed away. It also aides the production of breast milk.
  • Thyroxine – Controls metabolic processes in the body and influences physical development.
  • MSH – (melanocyte stimulating hormone) – This darkens the areola around the nipples to aid direction for a suckling baby. It can also lead to various other pigmentation discoloration such as ‘linea nigra’ and ‘the mask of pregnancy’ (also known as melasma).

Pregnancy Symptoms Week 7 – Linea Nigra

The Mask of Pregnancy

  • hPL (human placental lactogen)– This hormone is also produced by the placenta and is unique only to pregnancy. It is associated with breast enlargement and the production of breast milk and the secretion of colostrum (first milk) from about the fifth month.
  • Relaxin – As the name suggests, it relaxes and softens tissue, along with the pelvic ligaments and prepares the uterus for labor. Some women find that their ligaments can relax so much during pregnancy that their feet increase by a whole shoe size.
  • Oxytocin – Helps with the onset of contractions during labor.
  • Prolactin – Stimulates the breasts to lactate and fill with milk when the baby begins to suckle.

At 7 weeks pregnant you won’t have put any significant amount of weight on yet. Some women may experience tightness in their clothing already but this is more to do with sluggish digestion and bloatedness.

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(See Pregnancy Week 7 – The Baby’s Development)


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