Trying to keep calm. Advice please?

I’m 30. I have two daughters (with difficult pregnancies) from a previous marriage, and no children with my current husband. We are TTC... ♥️ we’ve been trying for a year now. About a week after sex (this time) I don’t feel so “normal”. I’m moody (like this)

extremely tired (like this)

and I can literally see and smell some foods that I really want (like this)

Should I be thinking that this is the start of a conception?? Or is this psychosomatic... I don’t want to jump the gun but it’s hard when we’re so hopeful! Positive advice welcomed. Thanks ladies.