So I've been on Kesimpta since November 2025 and didn't really notice any side effects other than a slight headache the first day or two after an injection. Well last month I noticed my armpit hurt and felt a lump. Being female I decided to keep an eye on it and if it didn't go away to see my ob. Well it eventually did get smaller so thought nothing of it. Well then I take my maintenance dose last night of Kesimpta and late last night and this morning I have the bump again and it hurts. Is this a swollen lymph node? I'm calling my primary care today to get an appointment and will bring it up to my specialist at my appointment later this month but curious if anyone else has experienced anything like this??