Symptoms during 2WW


So I know it is too early to have symptoms, but that doesn’t stop me from reading into everything! I’m on DPO 6-8 (it’s hard to tell cause I slept extremely poorly right around ovulation so temps are wacky) but based on EWCM I am DPO7. But the past few days I’ve been having bad heartburn and when I eat a normal meal I get uncomfortably full to the point of nausea. Also if I don’t eat I get nauseous. Plus back cramps started up today out of the blue. And I don’t know, I’ve just had this feeling this time around! Anybody else experience super early symptoms?? Or just have that feeling?