Am I pregnant? Help!

My period is late by 7 days, but last month I started about 3-4 days early. I don’t know if it’s important but I recently went on a vacation in my hometown and stayed here for a month. My sleeping routine has also changed.

The last time I had sex was Dec 8, 2017 and we used a condom. Haven’t had sex since, except, once this week where in we did it unprotected but only for like 30 seconds or so. Checked for pre cum before & after. And he also peed before doing so.

I feel like the chance of being pregnant is slim to none but I’m still worried. I haven’t experienced cramping like I normally would, but my breasts were sore a week ago. I’ve felt fine ever since.

Help? :(