Two days late do I test?

I gave up last month. I didn't bug or pester my husband when those magical most likely to conceive days popped up on my calendar at all. Never even mentioned them. As my period loomed closer I decided to give him a heads up...no one likes that kind of surprise. Then Sunday,nothing all day. We had intercourse that night. I spotted a tiny bit so before bed I put a pad on. But nothing was on it Monday morning when I woke up. Every time I've been late in the past the second I thought I could possibly be pregnant my period would start with a vengeance...but still nothing. It's been two full days...should I test yet?