Is cramping from 5dpo on and heartburn in the AM symptoms?

Hey ladies! This is my first time trying and we baby danced the day before and on peak day.. I started having some mild cramping at 5dpo and have been cramping since then. Sometimes mild, then sometimes more than others. I have also been waking up with heart burn in the morning. No other symptoms and was wondering if those could be some symptoms? If not, it's okay! I'm just curious lol