three days late

Ok well I'm three days late and I had sore breasts but it went away and had more normal period symptoms but without the period and now I feel like I'm experiencing weird symptoms because I'm worried and stressed, every time I have sex I use a condom and check right after I've only done it 4 times since last period and it wasn't during my fertile window, it feels like I'm getting my period but every time I check it's just regular discharge, is it worth taking a pregnancy test?