Am I pregnant?

Me and my husband have been trying for 3 years now to conceive and no luck yet. I haven’t got my period for about over 2 months now and counting .. I have taken 3 pregnancy test already 1 was positive, then 1 hr later the next came out negative. Ive been feeling a lot of the symptoms of pregnancy (sore breast, fatigue, restroom too much, dizziness) but I taken another test today which is a week later from the first 2 test and came out negative any suggestions?