Jenna Johnson has learned firsthand how difficult it can be balancing motherhood with her Dancing With the Stars career. “Been working some really long hours this week leading up to our exciting two-night premiere and my mama heart has been a little heartbroken having to be away from my sweet boy,” Johnson, 32, wrote via Instagram on Sunday, September 13, referring to her 3-year-old son, Rome. “Grateful he was able to come to set yesterday and see all the magic happening!” She continued, “I think I needed it more than he did.” The two-time DWTS champ shares Rome with her hu...