<p>Every <a href="https://medlineplus.gov/pregnancy.html">pregnancy</a> has some risk of problems, but there are certain conditions and health issues that can raise that risk, such as:</p> <ul> <li> A health condition you had before you got pregnant</li> <li>A health condition you develop during pregnancy</li> <li>A pregnancy with <a href="https://medlineplus.gov/twinstripletsmultiplebirths.html">more than one baby</a></li> <li>A health problem that happened during a previous pregnancy and could happen again</li> <li><a href="https://medlineplus.gov/pregnancyandsubstanceuse.html">Substance use during pregnancy</a></li> <li>Being over age 35</li> </ul> <p>Any of these can affect your health, the <a href="https://medlineplus.gov/fetalhealthanddevelopment.html">health of your baby</a>, or both.</p> <p>If you have a chronic condition, you should talk to your health care provider about how to minimize your risk <a href="https://medlineplus.gov/preconceptioncare.html">before you get pregnant</a>. Once you are pregnant, you may need a health care team to monitor your pregnancy. Some common conditions that can complicate a pregnancy include:</p><ul> <li><a href="https://medlineplus.gov/highbloodpressureinpregnancy.html">High blood pressure</a></li> <li><a href="https://medlineplus.gov/kidneydiseases.html">Kidney problems</a></li> <li><a href="https://medlineplus.gov/autoimmunediseases.html">Autoimmune diseases</a></li> <li><a href="https://medlineplus.gov/obesity.html">Obesity</a></li> <li><a href="https://medlineplus.gov/hivandpregnancy.html">HIV</a></li> <li><a href="https://medlineplus.gov/tumorsandpregnancy.html">Cancer</a> </li> <li><a href="https://medlineplus.gov/infectionsandpregnancy.html">Infections</a></li> </ul> <p>Other conditions that may make pregnancy risky can develop during pregnancy - for example, <a href="https://medlineplus.gov/diabetesandpregnancy.html">gestational diabetes</a> and <a href="https://medlineplus.gov/rhincompatibility.html">Rh incompatibility</a>. Good <a href="https://medlineplus.gov/prenatalcare.html">prenatal care</a> can help detect and treat them.</p> <p>Some symptoms, such as <a href="https://medlineplus.gov/nauseaandvomiting.html">nausea</a>, <a href="https://medlineplus.gov/backpain.html">back pain</a>, and <a href="https://medlineplus.gov/fatigue.html">fatigue</a>, are common during pregnancy. Sometimes it is hard to know what is normal. Call your health care provider if something is bothering or worrying you.</p>