Swollen lymph nodes all over my body, neck, groin, chest...

I've got swollen lymph nodes all over and have done for quite some time. 

I have three in my neck, one large one in my groin, one in my stomach (about 4inches right and online with my belly button) and a smaller but noticable one in my chest.

I have had bloods which all came back okay (only slight difference in thyroid but nothing major and to be retested in a month to 6 weeks)

I also had an appointment with ENT on Wednesday last week who couldn't be certain therefore have referred me for ultrasounds and potential biopsy which is on Tuesday coming. 

I have had aching limbs on and off for a number of weeks now. My arms and legs ache, feel numb and uncomfortable and have been keeping me awake. 

I can't say that I've been feeling unwell (apart from tiredness but I have 2 young children and we are on lockdown so that could explain that!)

I haven't been sleeping properly through sheer worry. I'm looking for a bit of advice, for someone to share experiences with etc as I am feeling a little lonely with the whole situation. 

Has anyone else had swollen lymph nodes in this many locations before? What has been the cause? Any help/advice/response would be great.

Sophie x