First sex experience

It was very random and without any precaution.. Changes in my body were:

1.I felt that I wanted to pee more than usual

2. My periods got late by 10 days that month (and every month when we have hardcore sex), I even feared that I got pregnant but thankfully not!

3. I felt nausea and was very sensitive to smells

4. My vagina farted sometimes like burrp.. That was funny but embrassing too ?

So, I want to know whether these things have happened to other girls too ?