Moms, has this happened to you?

Alright so I am exactly a week late today on my period. Always have normal 28 day cycles and always get my period within a day or two of when I am expecting it. Being pregnant is a high possibility since my fiance and I have been having unprotected . I actually bought a test the day before yesterday when I realized I'm kind of late and took it yesterday morning to find out that it was negative. I am having very dull cramping in lower abdomen, bbs aren't really sore at all which usually they are around my period so that's a little strange, very thirsty and tired. Those are my only really I guess " symptoms". Something just feels different. Lifes been good so no stress at all or with conceiving as this is unplanned if I am pregnant. Anyway, I've been rambling ....but my question is not am I pregnant because lol no one can answer that for me, I just want to know if there are any mothers or soon to be mothers who have been in this situation and found out that they were or were not pregnant in the end. Please the more stories the better. Thank you!