Yes it’s completely normal. I’ve been anxious since I was a child. Never had too many problems other than ocd until last year. My anxiety worsened without warning and I experienced all sorts of new symptoms that made me think something was wrong with me. If something happened to you in the past year that might have pushed your anxiety over the edge that’s mostly likely what caused your symptoms and anxiety to increase and to change abruptly. But no worries you’re not alone plenty of people with anxiety issues have this happen too including me! Wish you the best good luck!