do you think I could be pregnant?

Hey everyone, 
So before I get into this, my entire life I've had irregular periods. Sometimes I wouldn't get a period for 5 months. When I started eating better it seemed like my cycle settled down and I was having periods every month. My cat recently died (had him for 14 years) and I started eating bad. Not sure if it's connected but I missed my period this month. I'm late 3 days. 
Normally I wouldn't be too worried however, I had unprotected sex with my boyfriend (stupid. I know) he didn't cum in me but we all know that pregnancy from precum, although rare, is possible. 
So I currently am experiencing no symptoms of pregnancy or pms. No cramps. No tender breasts. No aversions to food or unusual cravings. Nothing. 
What do you guys think? 
Help please?

Glow Resources

Let’s Glow

Glow is here for you on your path to pregnancy

Glow helps you navigate your fertility journey with smart tools, personalized insights, and guidance from medical experts who understand what matters most.

25+ million

Users

4.8 stars

200k+ app ratings

20+

Medical advisors