I had unprotected sex on 21st July, my period was due 29th July and I haven't come on my period yet and I am currently two days late. I am pretty regular with my periods so its worrying me that I haven't came on my period yet. I know I'm only 2 days late and I'm probably just being paranoid but like I said my periods are regular. I took an ovulation test yesterday and it came back negative. So could I still be pregnant or any reason on why my period is late when I'm usually on time?
I have seen some childish answers on this site about being too young, I'm 18, at college and going to uni next year, so please no critisms about me being too young or irresponsible. I've read on the internet that the safest time to have unprotected sex is just before your period, and I have done this but now I am late. Someone please give me some advice?
By the way, I didn't have sex just before my period just because I read that its the safest time.