New at this baby making stuff

Ashley

I am 4 days late. I was supposed to start Friday instead I had discharge that kind of looked like red boogers. It wasnt a lot but noticeable in my underwear and when I wiped. I took a test that night and it was neg. All weekend, I had night sweats, some cramping and awful gas and bloating. I took another test last night and it was neg. This morning, still no period but sore boobs and nausea. I also feel like I'm catching a cold as well so I'm not sure if that would cause a late period. I've attached my calendar for extra useful info. I'm almost 32 and at what point should I see a dr for missed period?