could I be pregnant?!

Ladies, I'm absolutely terrified. I've honestly been so stressed this month that I forgot to take several of my pills (1st pill of cycle where black dot is). I'm on the combined 21 days pill and we don't use any other forms of birth control. I also added the chart of my intercourse activity. Please don't judge, I'm just a teenager and have a thousand things on my mind... but a baby is definitely not planned anytime soon. I was gonna get the iud next month but now I'm scared I might be pregnant ... I usually don't take the pill religiously at the same time everyday but this month is the first one that I actually missed several.