How did you know you were preggo?

I’ve been having weird symptoms. Some being tender asf boobs, nausea after eating, headache, craving for sweets, heartburn, muscle cramps, stomach feeling weird, tingling boobs,being supper hot ,constapated...etc and things just feel different this time. I’ve been trying for a while but this month I stop bc of so much going on and I just really have a feeling I am but I don’t want to feel stupid. I’m 8 days past ovulation and 5 days from my period. I took a test this morning and it was negative. I’ve been having slight cramps today. Someone help. Im driving myself crazy