Is a burning pain after sex a sign of pregnancy?

OK so I'm 4 days late for my period. And about a 2weeks ago I was having like cramps and I've been nauseous and queasy. But any way so this is going to get personal but my boyfriend was fingering me not to hard or anything and then after when I went to the bathroom it burned. Then latter on probably and hour later we had sex and it felt good I didn't cum though. But after it BURNED like really bad and it's been like 35 minutes and it still burns. Could I be pregnant? UPDATE I still have not had my period I'm Now 5 days late and it doesn't burn anymore not even when I go to the bathroom. So what is going on?!?!?