Increased resting rate

Becca • Married 💗 5.15.21 Baby #1 Coming April 2022 💗💙

Do many of you trust your Apple watches/fit bits? I have noticed my resting rate is usually at 65-70 be today when i woke up it was 87. I am thinking i am pregnant, but i was not sure if your heart rate increases this early (i would be considered 6 weeks) i haven’t tested since Thursday or Friday which i thought i saw a faint line but pretty negative. Any thoughts ??