Late period and PCOS

12 days late (period) as of today.

I've been bloated, back ache (bottom and sometimes the top), feeling sick (but that is normal for me).

But I do have pcos and I'm sexual active, he didn't finish inside me but I do know pre cum can.

My periods are aways irregular, my last period was for 14 days and I hadn't had a period for 8 months before that one.

Is it worth taking a test?

I want a baby but I don't want to upset myself...