Symptom spotting, setting myself up for disappointment.

So my sister in law is one of the only people who knows that me and DH are TTC. She has been texting me pretty much since the day I ovulated asking how I feel and stuff. To be honest, I do feel different, but I have only recently got off of BC and I don't really remember what normal hormonal fluctuations felt like before I was on BC and I am only 5 DPO. I was trying not to symptom spot and convince myself that I'll get a BFP this month, but my sister in law is killing me with questions and being so excited thinking I might be. I am afraid that now I am convinced and I am setting myself up for disappointment because there is a large chance I will get a BFN. Does anybody have tips for keeping a level head about you during the TWW, especially your first ever TWW?