Early symptoms?

Hi girls,

I'm new to the forum and I'm wondering about something.
My boyfriend and I have decided to try for a baby and we're currently in our first round.
My last period was on Wednesday, April 10th.
The following weekend we were busy doing a lot of chores. My ovulation should have been around April 23rd/24th.
Since Friday I've had really gurgly guts, and I'm having trouble going to the toilet even though I normally don't have any issues there. I eat normally and drink enough so it can't be that.
On Saturday I was nauseous all day and have been since then. My breasts have also been sore and my nipples are painful, which I normally don't experience!
I'm sleeping poorly and I'm tired, tired, tired. And I'm extremely irritable.
I've been off the pill since September last year, so it shouldn't be that I've stopped taking it, right?
My expected period is May 8th.
I haven't been thinking too much about it, but I've never had any of the symptoms I described above, and it just stood out to me.
Could these be early signs?
Thanks for reading and thanks in advance for any responses.
Love,