Should I worry about being pregnant?

It's been 3 days since I missed my period. The first day of my last period was on May 1st and my average cycle is 28-29 days. The longest it's taken to get my period has been 34 days, but that was the first month I got off of Birth Control. I track my period on a Period Tracker App and it has NEVER said more than 1 day late. I'm either early by one day, or late by one day. It now says 3 days late. Me and my boyfriend had done it unprotected but he's never ejaculated inside of me. I keep feeling like I'm getting my period, but instead of blood it's just clear liquid, like it feels like how I normally feel when I would get my period but it's not blood. I feel really plump and bloated, I feel really moody and sad a lot, I keep craving cookie dough ice cream and I just feel like a wreck. I was wondering if I should take a test or not?