Just gave the worse head ever

Y’all I usually love sucking my mannup. I have him squiring moaning and all of the above. But now that I’m pregnant I can’t for the life of me give good head. I’m constantly gaging and about to throw up omg it’s so bad he stopped me and said I’m gone go just jack off😩 I’m so hurt😭😭😭 this might be the wrong group but I need some advice. How can I make this better. Me gaging I’m every 2 minutes I feel like I’m ruining the mood