You are 15 weeks and 4 days

Your baby's skin is still see-through, with little fat beneath it at this stage.

171 days until your due date

Your baby's skin has three layers: the outer epidermis, then the dermis, then the subcutaneous layer. The epidermis started as a single layer of cells but is now three or four cells thick. Its outermost cells flatten but won't harden until much later.

The dermis is made of connective tissue, 90 percent collagen plus elastin fibers, which allow it to stretch and resist damage. It contains blood vessels and nerves that support the epidermis and give sensory feedback. At first, the join between the dermis and epidermis is smooth, but ridges gradually form and it becomes irregular.

At the same time, hair follicles start to develop. There's no significant fat under the skin yet, so it's almost transparent. Fat helps control temperature and acts as a water barrier, and because these barriers aren't in place yet, the skin still lets water pass through very easily.

As a matter of fact

Aspirin and preeclampsia

Low-dose aspirin may reduce the risk of preeclampsia in women at the highest risk.

Some research shows that women who previously had severe early preeclampsia can lower their risk of it happening again by taking low-dose aspirin (81 mg a day). But don't take aspirin unless your doctor tells you to, because it can cause serious side effects.

Focus on

Dads: The "goddess" within

Your partner may have mixed feelings about her changing shape. At times she may seem a "pregnant goddess," delighting in carrying a child, since nothing is more female than conceiving and giving birth, and when she feels like this she may seem strong and content.

At other times, instead of loving her belly, she may feel down about gaining weight and losing her figure. With fashion magazines showing very thin women as the image of beauty, it's no wonder a growing belly can trigger conflicting feelings, making her doubt her looks and knocking her self-esteem.

Help by encouraging her positive "goddess" side and reassuring her about her looks. Remind her that what she's doing is amazing and that you think she's gorgeous, and make her feel beautiful and wanted as her body changes.

This is general information based on NHS guidance, not medical advice, and every pregnancy is different. Talk to your midwife or GP about anything that worries you. If your baby's movements slow down or change, or you have bleeding, severe pain or leaking fluid, call your maternity unit straight away. In an emergency, call 999.