cycle? pregnant?

Hi ladies,

I have a quick question. I’ve been keeping a close eye on everything last month. For example, on May 11th I had a lot of stretchy mucus, which I think stopped completely around May 16th.
Since about May 16th, I’ve been having tender, sore breasts, but they don’t look any different. (In previous months, this was only sensitive for about 2 days and then it went away).
I think I should be getting my period around this time.
I’ve also had cramps and lower back pain for a week now, plus frequent urination.
I took a test this morning, but it was negative. Later in the afternoon, though, I had a lot of stomach cramps again, but no period, and now the cramps have subsided a bit.
Could it be that ovulation was much later than the stretchy mucus? Should I wait a few more days for a new test if I don’t get my period?

Thanks in advance for your replies!