I need help...

So I was having crampsthis morning like if my AF was getting here, my AF starts in Sep 19 BTW..but I taught it was coming today early cause I was cramping & it felt like I was staring but then the pain went away...so I took a ovulation test & it came out low....I know it kinda don't make sense what I'm saying /: but I'm new to this me & my fiance are TTC with baby #1 we have to months trying....so I'm hoping my AF don't come this month