Please delete if not allowed!!

I’ve had 3 round of the depo shot and stopped it. My last shot was 4 months ago and I haven’t had a period since. On 11/4 he pulled out “too late” and I’ve been freaking out since. I’ve been experiencing headaches and mild cramps and can’t seem to keep my eyes open. Ofc it’s too early to tell or experience any symptoms. ( I have a 2 year old I’m not new to this 🤣) but I’m just wondering if it’s possible for me to get pregnant with no period after dep and should I be worried