Help please


I’m currently 19 weeks 4 days. I just wanted to talk about an experience and wondered if anyone else has experienced it or know what it could be. I have had a few times where I just feel very funny, I can probably only describe it as feeling slightly poorly, a little funny in the head as if everything around me seems different and I felt a little hot/sweaty to touch. It probably lasted around 10-15 minutes and then it wears off it and then all is fine. I had it probably around 5 weeks ago twice in one day and I had it once today. Has anyone else experienced this or know what it could be? Could it be pregnancy related or unlikely? Should I be scared?