So hard TTC

I've stopped the pill in April I missed a mth period in May and then had one in June again no period in July, I'm getting real bad hot flushes and just start sweating and getting irritated. I'm 34 and have done 2 pregnancy tests both neg. dr said its not a early menopause. When I wake up in the morning I'm all clammy and today I felt abut shaky to, had b12 injection yesterday so could be that. Anyone else feel like this?