Please read this!! It's really long but i need help?

Okay, so basically i hooked up with this guy about 2 weeks ago. We fooled around in his jacuzzi and nothing really happened but then, we took a shower together and then there was contact happening. We didn't have sex, but i'm almost positive he finished, then involved contact aftwerwards. I'm a few days late (its either 2-5, im not sure!) for my period and im scared to death that im pregnant. I read that the very stress of it could make you miss your period completely or im just irregular. My friend has had sex without a condom and had 3 pregnancy scares and turned out fine, but my other friend strongly believes i have a good chance at being pregnant. Should i take a pregnancy test? Please help!!! :/