Lower back pain and Bad AF like cramps

My cycles for the past few months have been roughly 25/26 days. (They used to be 28 but for some reason got shorter over the last 6 months or so)

According to that cycle length I am 2 days late today. I ovulated on 14th or 15th.

For the past 5/6 days I’ve had string af type cramps and lower back pain. Last night however they were a lot more severe than normal that they kept me awake. Woke up this morning, expecting af but nothing.

Waiting until tomorrow to test (leaving it as long as possible as I’m so nervous to see another negative) but was this a sign for anyone? I literally feel like af is coming but these cramps have been going on for a while and getting worse.

Any support/advice welcome! X