Signs or stress?

Hello everyone, me and my fiance have been TTC for almost a year now with no luck...lately I have been getting really bad heart burn with anything I eat. Sometimes it gets so bad I want to throw up. I'm also getting cramps and feeling extremely bloated. This Friday when I was at work, I felt extremely tired ( almost to the point where I was having a hard time keeping my eyes open)

A few days, this week I gotten headaches. I've been craving sweets and Alfredo sauce? ( the sweets is a little unusual for me)

According to glow I should be getting my period tomorrow. However, I have had irregular periods for years.

My question is, are these signs of pregnancy or could this be from stress? I just started a new job and I have been out of work for 3 months....I don't want to give my self false hope....