Am I just imagining??

Natasha
Y'all probably hear this a lot, and I'm more than likely just wishing so much im imagining it, but are the following potentially early signs of pregnancy?
Feeling sick
Sore breasts- especially my nipples
Breasts feel heavy
Stomach cramps/unsettled stomach/rolling stomach
I've been TTC for almost two years now and it's really starting to get to me. I'm 6 DPO and I feel like it's all in my head and I'm reading too much into it all. 
Good lord I sound whiny. I apologise, I'm sure you all have your own TWW going on