Could I be pregnant?

So here's some info! 
1. Cycle length usually 23 to 25 days.
2. Day 17 and 18 I had unprotected sex.
3. Technically I should be on my period right now (cycle day 3, according to glow) but since I haven't had it I guess I could say this is cycle day 29 lol 
4. I haven't taken any tests. 
5. No plan b or anything taken. 
If I don't have my period tomorrow either that will be the fourth day of not having it and it'll  be very unusual for me. Should I take a test over the weekend? 🙊 let me know what you think, thank you.