Weird feeling I'm pregnant

So my SO and I have been TTC for about 5 months now and this month we didn't try that hard because we're going on vacation next week. Well last night I was lying in bed watching TV and wasn't really thinking about anything at all really and all of a sudden I got this wave rush over me and a very strange weird feeling that I'm pregnant. I've never had this happen for I haven't been seeing any signs because it's only been like 4 days past ovulation I think but it was extremely overwhelming and it left me anxious and confused and overwhelmed. Anyone else have this happen? The obsession with TTC passed months ago now we're just chillin until it just happens to happen for us. ????? AF due August 31