Implantation signs/symptoms?

Sierra • Mother to 2 smart, beautiful, happy babes named Isabella and Luca♥️
Hi guys I'm new to this group, so if I'm breaking any rules I apologize. I was just wondering if any of the moms in here experienced any implantation symptoms or very early pregnancy symptoms. I've been feeling slightly nauseous for over 24 hours now non stop and I've had crazy heart burn! (I haven't had heart burn in years!) My boyfriend and I are currently TTC and had sex 5 days in a row during my fertility window about a week ago. I thought it might be something I ate as well but my boyfriend and I ate all the same things and he said he's fine. Am I just reading too much into it or have any of you ladies had similar experiences you can share with me?