Likely good “prego”?! HELP

Saleena 👧🏽👼🏽

Long story short... my daughter is 5 months old, it took us a couple years of fertility treatments to conceive her. I went to say goodbye to my husband seeing he is deploying. We used protection the first time & 30 min later we didn’t. 🤦🏽‍♀️ He said he’d pull out and unfortunately he didn’t!!! My period was due to come that weekend but it didn’t. Instead it was lots and lots of clear egg white thick sticky mucus. Was that me ovulating? I’ve never ovulated on my own. Still no period and that was 9days ago. Couple I be pregnant or since I needed fertility help with her is it going to take fertility medicine again?