Lower back pain

Hey ladies so I’m still watching the cowboys game go cowboys 💙with my bf and out of nowhere I get this sharp pain 😔in my lower back right side it comes and goes and I have mild pain under my stomach 😔 it comes and goes I’m currently TTC for my rainbow baby 🌈🍼👶🏾💙💕 I’m on CD24 my ❤️starts in 6 days idk if it’s a sign that I’m pregnant🤩 or just a sigh I’m about to start my ❤️ i had this pain come in for before 🧐when I was pregnant with my first child😇 so idk help please I don’t want to get my hopes up I’m going to take pregnant safe pain 💊 just in case I am !