Severe sunburn?

Ok so this is my shoulder it's been 4 day now. I went to the beach and pools with my little family and forgot sunblock bcs I was to busy chasing my 3 young babys its itchy burning tingling I can't stretch without my skin filling like its gonna rip I can't even take the feeling of fabric so I haven't been sleeping I'm 16wks 3days and I'm nervous bcs i have had a headache with ot for 4 days and I swear the lighter the red gets the more painful the burn gets what should I do I need help plsss