Throbbing pain in vagina

Occasionally I will get this throbbing pain in my vagina. The best way I can describe it is a sudden twinge of pain that will throb 2 or 3 times then go away. It happens rarely maybe once or twice every couple months. When it happens I always get worried thinking it’s a yeast infection or uti or possibly pregnancy but then it goes away immediately and I never have any other symptoms. This throbbing pain just happened again yesterday while me and my husband were out eating dinner. Has this happened to anyone else? Does anyone have any idea what it can be?