Hiii.. I Had An Little Pentration From My Fiancee..not Fully

Hiii.. i had an little pentration from my fiancee..not fully penetration it goes only half in my vagina.. but he does not ejaculate inside my vagina.. my periods are missing 5days overhead..so what is solution..i m pregnant or not..worring alot what to do.. for marriage having 6mnths to go.. to confirm my pregnancy.. shall I use pregnancy kit now..will i get the info..plz help me