This happened to anyone else?

I've been trying to conceive for nearly 2 years. AF should of arrived yesterday, I'm never late in fact usually early. I've had 2 uti in a week, I had brown cm last week. I've had spotting which was dark brown, I thought this was the start of my period but hasn't changed/gotten heavier. I daren't test to get disappointed again. We fly on holiday Monday, I've got really bad cramps like my period is imminent. Just wondered if anyone else experienced this?