Katharine McPhee feared "relapsing" with her eating disorder whilst pregnant

She said: "I have felt really stable in my life in the last four or five years, and my weight has been sort of like more consistent. But feeling like there was a relapse after getting pregnant was really shocking and upsetting and concerning for me, because I was suddenly so obsessed with food, starting from this first trimester. I had such a distortion of the way that I looked. I look back at these pictures and my husband was documenting like every day, because I'd be like, 'Take a picture of me now. Am I showing?' And I look back and I'm like, 'Oh my god, why was I so hard on myself?' ... I didn't full-blown relapse. It was definitely a feeling like I was overeating. And then I had that stuffed feeling, where I couldn't breathe.

"And I couldn't figure out if I was just stuffed feeling because there was a new thing in my body that was making me feel stuffed or if I was actually eating too much food. I was eating really fast. And there's just a lot of anxiety."

And the 36-year-old singer and actress managed to "weather" her negative feelings and she is feeling "really grateful" that she got through it all.

Speaking on Dr. Berlin's Informed Pregnancy Podcast about her experience and battle, she added: "I weathered it and I'm really grateful I'm at the end of it, that I feel this good and that I look in the mirror and I'm like, 'Yeah, my legs, thighs, arms are a little bit thicker, but I'm OK with it.'"