Feeling Worried

Hello, Ok so I been trying to conceive for about 2 years now. My dr has did blood work and vaginal and regular ultrasounds and everything is normal and function correctly. But my period is so irregular comes on one month nothing next month I be having all the symptoms of being pregnant than my period comes on following month. But she refuse to give me Medicine to regulate my period or to help me conceive...

What should I do? Should I find me another Ob/gyn.