Anemic

Has anybody else been diagnosed as anemic in their third trimester? I found out yesterday at my 29 week checkup that I am anemic. My doctor says it’s very common in pregnant women in the last trimester, especially. She wants me to start on an iron D supplement of 65 mg daily, which I am going to take for the first time tonight before bed. Even though it’s very common and the baby is still healthy and doing great and so am I, I’m just nervous. Did anybody have any negative affect when it came time to deliver due to being anemic?