Feel like I'm stuck in limbo

We only had our little boy 16 weeks ago, and I haven't had a period as he's ebf so no idea where I am in my cycle; but about 2 weeks ago I had some spotting (I often get ovulation spotting) and in the last few days I've just been feeling awful:

- nausea

- bloating

- gassy

- constipated

- dizzy

The list goes on. Now we're not really ready for number 3, but now the idea is in my head, I can't get the idea out of my head and really want to be. All tests have come back negative, but as I don't know where I am in my cycle I'm clinging onto it being too early.

There's no real reason for this post, I just need somewhere to air everything.