2 days from period

Vanessa • 25 years old. Married. 5th grade teacher
25 years old, ttc for about 5 months now. I'm 2 days away from my period and I've had no period symptoms. I've occasionally had nausea for about 10 minutes this morning and heart burn all day. My SO and I had sex during my fertile window and I'm so anxious. I took a test a couple days ago and it was negative. Just needing some support or advice? I don't really have anyone to talk to about this. I've been wanting to take a test every day but I have to restrain myself. I never thought it would be this difficult.