general pregnancy

I got married last month to my better half. When we returned from our honeymoon I completely change. My appetite is no where to be found, my lower back hurts, I have cramps that feels like AF, have headache and all I want to eat is pickle and soda brisket. We've been trying to have a baby for 3 years and no luck. Lady in red is due on the 23rd.  I've read on the internet that it may be early sign of pregnancy but I don't want to get my hopes up. Have anyone experience anything similar to this?