Please help, im 6 days late!!! :(

Sammie • Happily taken by the best boyfriend in the world❤️
Please help, im 6 days late for my period. 
My boobs and nipples are soo sore, tender and my nipples have a tingly sensation. 
My lower back keeps aching but when i rest or my man massages it then it eases.
Sometimes I can wake up or go to bed feeling sick, as well as during the day I can feel sick.
Ive had cramping just like when im going to come on, but no period :/
Lastly ive recently started to feel more tired than i usually do. I could sleep all the time if i got my way lol.
What do i do? Am i pregnant? Could i be pregnant?
My man said to me yesterday 'your pregnant' ..'are you pregnant?' but i dont know, so what do you guys think?