I need advice.

Husband and I are trying for baby number two. I am pretty sure I am 11dpo, and my period is due July 1st. I have a cycle ranging from 26-29 days.

So, the last two days my lower abdomen has felt very heavy, or tight. Like it is full, or I have to pee even though I just did. I have been nauseous for almost a week. I get spurts where it feels like I have the flu and then it subsides.

Today, I am nauseous but I also have diarrhea and a bit of a headache. I tested yesterday morning and it was negative.

Is this a start to anything and when should I test again?

Ps, with my daughter being four I don't remember any of my symptoms, and if they were this bad I think I would.

Any suggestions or opinions would be very much appreciated! Thx.