I am 22 and my boyfriend is 24, I was suppost to get my period last week but I didn't! Last Tuesday 21st of June I thought I was getting my period I had cramping as normal and very light brownish muscus type period !(my periods are normaly light at the start and get very heavy the next couple of days) me and my boyfriend had unprotected sex and he came inside me, the next day my period stopped! It has been a week and I have shown no signs of being pregnant other than feeling bloated! What are the chances I could be pregnant? When should I test to check for sure?

Yes you could be pregnant, its best to wait until your next period is due and if it doesn't come on then test using first morning urine.

Yes very possible, since any sex even protected sex can cause pregnancy, since no method is 100 percent.

It is a waiting game now till next time for the period and see.