I remember years ago when I was trying with my ex that I would have all these "pregnancy symptoms" that never were. I think it's a bit of a psychological thing when you really want to be pregnant that you see every little thing like a once off feeling of nausea, or heartburn or sore nipples etc (things that happen from time to time when you are not pregnant) must mean that you are pregnant. I found the longer I didn't fall pregnant the more prevalent the "symptoms" became. If you are not careful it can do your head in. In total I've had 9.5 years of TTC so I've had a lot of times where I thought I was pregnant but only two times that I actually was.

Try not to think of yourself as possibly being pregnant until you are a whole week over and have had a BFP at a week over. It's hard I know, but this is what I did recently when I found myself starting to think I was pregnant again. Turns out I was but it looks like I lost it at 6 weeks.... won't know for sure til Friday. I'm now thinking of changing my week over rule to two weeks over. This way I could just think I was two weeks late and save myself the emotional rollercoaster ride, not to mention the hospital visit.