Symptoms and a week late on a very regular period

My boyfriend and I have been having sex for a while now. I have started to get different symptoms of pregnancy for about the past two weeks now and it was very odd. I usually am never tired or fatigued, never sick longer than a day, never a week plus late, sore breasts, etc. So I told him what was going on and he already has two children from a previous marriage so obviously he has healthy swimmers. He was very calm and told me to wait and test on a week. Well I’m impatient and I went to buy a test and took them both (one last night and one this morning just to be sure and what not) and they were both negative but I keep getting this feeling that it’s wrong. I have looked up that some pregnancy tests like first response sometimes don’t read as fast or well as the ones that are just the cheap $1 ones with the droppers. I don’t know really what to do.