Suggest Treatment For Tooth Ache With Headache

Hi, I am 31 yrs old...female. at the start of this month I had a very bad tooth ache I couldnt get into see the dentist but then it went away.that was about 3 weeks ago. Last week I got a sharp pain in my left temple...same side as the tooth ache. I went to the ER last friday...he said that he thought it was the nerve acting up from the tooth ache that I had. he gave me extra strentgh tylenol and i went home. Sunday night the pain got so bad that I went to the ER again...this time another doctor said that I was having a tension headache gave me vicondin and a script for Floricet. I have yet to take it because it soon went away plus on the bottle it says not to take if ur might be pragnant. I do not know for sure if I am or not....I will not know until mon-tues of next week. But I have been nuseaed and peeing alot...I do have other children so it makes me think that I am pregnant. But i am having really bad dizzy spells to the point that I almost fall over. I just gave blood 3 weeks ago to a blood bank and got info that my cholerstoroll is fine...sorry bad speller. when I went to the ER ...both times my blood pressure was fine. I was born with a heart defect...I was born with 3 holes in my heart ...I had open heart surgery when I was 15 months old...and have not had any trouble with it since. Please tell me what this is or could be...Getting scared. Thank you.