5DPO symptoms

Kat
Hello ladies!
Me and my hubby are currently trying (when we can as he works overseas and comes home every 2 weeks at weekends). 
Never been pregnant before. 
Yesterday I was 5DPO, in the morning I had such a wave of nausea hit me and throughout the day and felt better if I ate something - mainly mints!  
I've also been cramping the past few days. 
This morning DPO6 no nausea but dull cramping and AF is due in 8 days. 
Are the symptoms I've been having similar to what others have experienced around this time of DPO?  Could the nausea yesterday have been related to implantation?
Thank you :))
Baby dust to us all ✨✨✨. Kathleen