Baby's breathing

My baby is 10 weeks old and every once in a while she'll gasp for air in her sleep. She's done it twice since she had her first shots yesterday. It's almost like she stops breathing and gasps to catch her breath. Sometimes it sounds like she's snoring also. I'm a ftm and I honestly don't know what's normal or not. I seriously felt sick to my stomach when it happened tonight, should I be worried? I'm completely terrified of sids. Some advice would be great fully appreciated thank you .