HELP - 5 days late NEGATIVE tests

I’m the most regular period starter you’ve ever met. 27 or 28 day cycles are my norm. I’m 42 years old and five days late for my period. I’ve been having moderate to sever cramps and my lower back feels like it’s been stretched out. I only get cramps day one of my period and this has been going on almost a week. TWO at home pregnancy tests came back negative. Is it too early to test? Im on day 32 of my cycle with no sign or smell of period. Any thoughts?