I think im pregnant

Im 7dpo and 6 days before my period, i woke up this morning and my stomach just feels tight.

On monday 20th may i had unprotected sex in my fertile window but the next day i took emergency contraceptive pill (ellaone)

After that ive been feeling weird like back pain, tummy discomfort and bloating and a little light headed. Ive been feeling this way for about a week after taking the pill. i dont want to be pregnant im abit too young.

Im going to the doctors today but i think its too early to test if im pregnant or not!