What does your stomach feel like after about a week within conception?

It's unlikely to feel any noticeable or significant changes in your stomach just a week after conception. Typically, the earliest and most common early symptom of pregnancy that some individuals may experience is implantation bleeding, which can occur approximately 10 to 14 days after conception. This spotting is usually lighter than a menstrual period and may last for a few days.

During the first few weeks of pregnancy, hormonal changes primarily involving progesterone start to take effect, but any physical symptoms or sensations typically become more apparent a bit later. It usually takes several more weeks for the uterus to grow and change enough to cause noticeable physical sensations or visible signs of pregnancy.