FERTILE WINDOW

TODAY MY FERTILE WINDOW STARTS! DO I HAVE A GREAT CHANCE AT CONCEIVING ON TODAY OR ANY DAY THAT IM FERTILE OR AM I JUST TOO EXCITED??!! 
I ALSO HAVE GASTRITIS, I KNOW IVE TALKED ABOUT THIS TOPIC A LOT BUT REALLY HAVENT GOT A RESPONSE BACK 😔 BUT, I WAS WONDERING IF IT WAS A PERFECT TIME FOR MY HUSBAND TO TRY & CONCEIVE SHOULD I WAIT UNTIL I FINISH MY ANTIBIOTICS AND OTHER MEDS FOR THE GASTRITIS? OR SHOULD I JUST GO FOR IT???!!!! HELP! 😞