Heather Rae El Moussa shared a sonogram photo of her unborn son. The ‘Selling Sunset’ star – who is expecting her first child with her husband, Tarek El Moussa, 40 – gushed about how “special” it was to see the baby and how much she loved to “hear his heartbeat” in a series of posts on social media. The 34-year-old reality television personality wrote on Instagram on Tuesday (09.08.22): “”This was my very first time seeing him since I found out his gender so it was so special [heart face emoji]. I love ultrasounds because I get to see him and hear his heartbeat.” Heather admitted that “as a ne…