So my period has been coming maybe a day or two late here and there but otherwise still regular. However my teeth hurt, acid reflux, lower back pain, an extreme case of yeast infection, feeling tired and strange quick dull pains around my stomach and vaginal area. I've taken 3 -4 pregnancy urine tests over the past 4 months (one at the OGBYN) and they all have been negative. Should I get a blood test?