Hmm... Very slight pink discharge

My period was supposed to arrive today and all I've had was a very slight pinkish discharge this morning. It was so slight I almost ignored it. 12 hours later, no more pink and no period. I had a couple very sharp quick pains in lower abdomen/ vagina but other than that nothing abnormal. No unprotected sex and I don't believe any condoms failed. When we don't use condoms he pulls out. Is this normal? I usually start pretty quickly after I notice pink discharge but I still just have heavy milky cm. I'm sure I'm just crazy but I was also nauseous for a quick minute today before I even realized my period was due today. Any insights? ❤️ thanks ladies!