When to test

having pcos stinks. ive been getting my period on the 27th with spotting on the 26th since February which is somewhat normal for me. before February I hadn't had a normal period. well I now have a period every 31 days and it hasn't shown yet not even any spotting. I feel like its coming but it just hasn't shown up. this makes me wonder if we finally concieved again. I also know that pcos  sucks and can make me irregular again. im really hoping its not my period. I was having some sharp pains last Friday but I again know that can just be the pcos. Im not sure whether to wait until Wednesday or Friday to take a test if I don't get it.