Elated or devastated

Okay, so about three weeks ago I started to get bad heartburn and sore breasts. And about 2 weeks ago I started to become hungry ALL the time as well as nauseous about 30% of the time. 
​We've been trying for our second for AGES. When I was pregnant with my son, I had heartburn ALL the time (rationed out my 5 tums a day! Lol) and sore breast for a good while. I also felt hungry if I didn't eat every few hours. Feeling nauseous isn't common-I hate to puke and I never really need to. But I'm constantly feel like I'm going to puke after eating certain things I love. Last night for example I was eating frosting (right from the container because I wanted a quick snack) and I had to stop after the second spoon, I was feeling like I was going to puke. Very weird.
​Also, my last period was a weird one. Normally my period is 5 days (first 3 heavy-last 2 progressively lighter). And my last period was a week late, last 3 days and was heavy 1 day, light 2 day and only when I wiped on day 3).
​Anyway, all of these things, I think I'm pergnant, and I'm not normally a believer. I rarely think I'm pregnant. Even to the point where I won't even consider taking a pergnancy test until I've been late for a week. My period is due on Saturday. Please ladies, pray that this is our month!!! Fingers crossed, throw your sticky baby dust my way-anything! If I'm not pregnant I think I'll crawl into a hole and never come out.