Hard, large lymphnode

Hi,

I'm a 27 f and in March 23 noticed a swollen lymph node. It's still there 4months later.

It's quite big maybe 3cm, on the left side of my neck.

It's hard and immobile.

And I am terrified.

I went to the Dr yday and they didn't seem to worried and referred me for a non urgent ultrasound.

The anxiety is too much for me so I've booked in privately for an ultrasound next week.

I have no symptoms but just to top of the anxiety I'm 5 weeks pregnant.

I'm so scared and I've absolutely convinced myself it's something g terrible.

Anyone else in or been in the same situation?