Early signs of pregnancy ?

La

I’m on those PMS days (my period suppose to come in 6 days) , but I feel my sore breast and nipples a little different than usual (erected) and woke up headache. I had sex this morning and a now I went to pee and had a little drop of blood. Sometimes intercourse triggers my period and make it come earlier but

Could this be an early symptom of pregnancy? I’ve read that yes but I’m looking for some personal experience of early symptoms here