Oo normal yan sa early pregnancy, sis, ang ligaments mo ay nag-stretch na and hormones everywhere, kaya yung mild cramping on one side is actually pretty common, lalo na pag gabi when you're lying down at more aware ka sa body mo! The breast tenderness coming and going is also totally normal, some days sobrang sakit, some days wala, happened to a few of us din in the first trimester and it freaked us out din, pero once we talked to our OBs, they said it's just hormones doing their thing. That said, since you're a first-time mom and you're really anxious about it (which is valid!), I'd still text or call your OB's clinic on Monday and just mention the cramping on the left side, they might be able to give you peace of mind or an earlier appointment kung kailangan, instead of stressing until Tuesday. Preg brain is real and overthinking is part of the journey, pero don't suffer through it alone if you can check in with your doc muna. You got this!