Heart palpitations

Hey guys. I am 5 weeks and two days pregnant and I’m wondering if anyone has experienced heart palpitations in early pregnancy before. Everywhere I’ve looked says it’s normal and I don’t have an OB appt. until June 19th so I’m wondering if anyone has some experience. No shortness or breath, pain or really anything other than my heart just feeling like a flutter at times. Stops when I walk around. Only while sitting and laying on my back. HELP ME OUT LADIES!