TWW & UPCOMING SURGERY

So I got married last Saturday, the 16th, and I was supposed to be ovulating the night of our wedding...Of course we had sex at least once a day during our honeymoon as well...But the last 3 days I have been EXHAUSTED like never before...Like i can be up and active for 3 hours and then be wiped out completely and take a 4 hour nap...I'm hoping I'm pregnant but worried because I haven't gotten a positive test yet and am supposed to be having knee surgery this coming Thursday...Btw, period is due like next Saturday or Sunday...Help please!!!