What should I do or think ? 😔

69 days since my last period and 32 days late from when I was supposed to start my period. I've took a lot of test most of them are negatives and 2 vvfl. my back hurts, I have heartburn for no reason in the morning, I feel bloated and uncomfortable. I feel dizzy sometimes and nauseous at times. I'm very confused. like what could it be?? I stress but when I do I'll be 2 or 3 days late not 2 months. Has this happened to anyone ?