PLEASE help!!!

I had unprotected sex last night thinking it was fine because I'm on the combo pill and have been for a year, however I woke up this morning and had clear almost sticky/stringy discharge. I know this type of discharge happens when youre ovulating. I'm on my last few days of my placebo pills, but I had my period a week before hand and only had some minor bleeding this week. I dont know if thats important but I'm truly freaking out because I'm way too young and in a terrible situation to end up and as a young mom. Please help! Let me know if I'm freaking out for no reason or truly do have something to be worried about. This was my first time having unprotected sex and I'm really freaking out over here