Ttc, 7do have some symptoms. So confused.

The first day of my last period was dec 11th, could have ovulated between the 22nd and the 26th. So if that was the case I'm about 7dpo? Maybe I'm pretty new to all this lingo and tracking. We never used any method of tracking ovulation. This wasn't nesscarily planned, but we definitely be a welcomed surprise for us. We stopped trying in October because it was getting to stressful for us. But right now nothing sounds good, well except sweets. And then once I eat, I get extremely nauseous. I haven't thrown up, but I still have that horrible feeling of my stomach turning. I always have this odd pinching feeling below my belly button. And the past two days, (my days off) I've went to sleep at 11pm and not Woken up until 1-2pm the next day. There's also been an increase in going to the bathroom. I've had all these symptoms before, but they never happened this early and always ended up being my period. I'm not sure what to think? Any insight would be awesome!