Possibly Pregnant

I'm 8 days late for my period. I'm not sued if I'm pregnant or it's something else. My husband and I had sex on my fertile days but used a condom. I have some symptoms like sore breast, nausea and tiredness but that's about it. The last couple of days I have had a lot of CM as well tmi I know I'm sorry. I have taken 2 pregnancy test and both negative. I don't know if I show wait a few more days and take another or just call my doctor. Any ideas?