Pregnant?!

Hi everyone,

I've had some - for me - strange, unfamiliar symptoms for the past week. Last week, a few hours after getting up, I got a headache, heartburn, felt a bit nauseous, and had to go to the bathroom more often. After I 'googled' these complaints, the results mostly pointed towards pregnancy symptoms. I'm still experiencing these symptoms now.

I was on the pill for one month, and then I started the pill a bit late after my break week - but hopefully only one day late. I had sex a day later; could I be pregnant, or is it just a coincidence?

Thanks in advance for your answers!