I don't get it? Strange cycle

Hi,

I'm 21 and my boyfriend and I really want to have a baby.

But I've got a weird little problem.

I stopped the pill about 8 months ago, and after that I actually had a fairly regular cycle etc.

But now for about 3 to 4 months I haven't gotten my period. The first few months I had very light bleeding, but really minimal, and the last time it was just nothing, except once a little bit of brown (old) blood, so now I'm waiting to see if I'll get my period.

I've taken a test a few times, but it's been negative every time.

I do get super dizzy every time when I should actually be on my period, and nauseous.

My cervix is quite low right now and very hard, my stomach is gurgling, my breasts are tender, I have pimples on my back and chest, I get warm quickly, I'm dizzy in the evenings and nauseous (also in the evening).

I'm not really sure what to do with this.

Does anyone have any idea?

Greetings