Is this a symptom?

I've been on the combination pill for 8 months now, I have never missed a pill and I take it at around the same time every day (within the same 30 min) I never let my boyfriend finish in me, always pull out or we put on a condom, I won't lie, sometimes we start without one.... I'm getting weird shooting/burning nipple pain and my nipple is pink at the very tip..some light cramping too. My discharge is still thick white as it's always been but I'm so scared that I feel nauseous and it makes me more nervous. I'm going to buy a test after work but I want some opinions please.