My periods are delayed... I'm scared!

Hello, This is my first time ever posting over here but I'm desperate. I need help and advice from you all ASAP! Please help me.

I'm 21F, currently preparing for my post graduation entrance exam. I've always had very regular period cycle, mostly of 26-28 days and max it has ever extended to 30 days since I was 13yrs old. But this month, it's different... It's been over 32 days (my last period started at late night of 15th Aug and today it's 17th sept) Last and only time (this month) I had s*x with my bf was around 10 days ago. Before that it was around 2 months ago- after which I had normal periods.

A bit of context- I checked on google for early symptoms of pregnancy but most of them are similar of PMS so it's very difficult to differentiate. The symptoms I'm having are- 1. Cramps 2. Mood swings 3. A lil bit bigger breast 4. Bloating 5. All the time I feel like I got periods, like something is flowing out of my v*gina.

These are all the normals symptoms I get every time before my periods, nothing is new. But scary part is, these are also all the symptoms which are normal in early pregnancy.

Also, I have gained quite a bit of weight this month and I'm always stressed about my exam now even for periods. Please help me in knowing if my periods are just delayed or it's something else. I really really need your help! Right now, I can't afford all this stress cuz of periods... I need to focus on my exam. Also, some effective tips in bringing periods early (if it's just delayed). That would mean WORLD to me! Please please help me!

Edit: I live with my parents who are very orthodox and conservative. Just randomly taking a pregnancy test at home, only at the doubts or just going out and seeing a doctor alone is not at all possible for me. And if my parents find out, I'll be dead. That's why before taking any of these actions, I just want to make sure if there is no possibility of anything else at all.

[Update]: I got my periods! Thank you everyone for suggestions and support. It was really due to stress.