Are Nausea, Hunger And Soreness In Nipples Signs Of Pregnancy?

Hi, I've been off the pill injection since August and I had my first period in January and my second one in February both towards the end of the month me and my partner are trying for a baby but no result yet but the last 5 days or so I've been feeling extremely sicky but not being sick then it passes and I feel hungry so I eat then I feel sick again and then hungry and also my nipples are soar and I've been having some mild cramps in my stomache