Advice

My period is now 3 days late and my cycles are usually pretty regular. I never properly tracked ovulation but due to symptoms of ovulation such as mild cramps and clear thin fertile cm I am sure I ovulated late this month. For the last two days I have been quite crampy, bloated and gassy even. My cervix is high, soft and I have thin milky white discharge. I have been extremely emotional for 2 days now and even started feeling nauseous yesterday. I took a pregnancy test this morning and it was stark white negative. Just feel different this month, this is our 5th month TTC. Seeing my GP on Thursday for a completely different reason, should I mention it to her or do you think I’ve just missed my period this month?