constantly getting sick since moving to the UK

unsure if this is just an unfortunate coincidence or not, but i moved from the US to the UK in late september of 2024 and have fallen sick five times since being here (almost four months). this is really abnormal for me, as usually i’m only sick with a cold a handful of times throughout the year. within the first few days of arriving, i came down with what felt like the flu. i also have had three bad colds and food poisoning (i think). i just got back from visiting home for christmas break and i’ve already got a dry cough and sweaty shivers. i’ve always been a bit of a germaphobe, so i’m quite clean and don’t have any issues with washing my hands or anything. i’m just confused why this is happening and was wondering if anyone else experienced something similar after moving. i’ve tried to enjoy my time here, but it’s hard when i always feel so terrible. any help is appreciated!