HIV Symptoms and other relations

Hello, i’m a 23 year female student studying in the UK and i’ve been very worried whether or not i’ve contracted HIV. Just to give a small background, i’ve had unprotected sex on Feb 2019 and ever since that ‘hook-up’ i’ve never experienced any symptoms related to HIV whatsoever. Around March 2019, i bought a rapid HIV testing kit and got myself tested, results were negative. So i thought okay i guess i was safe, but it still lingered on my mind on how the best time to test for HIV is after the window period when the virus as replicate and right before it moves into the latent period. However, around Oct 2019 i developed this dry area under my eye, which at first i thought it was ringworm, but turns out it was eczema/atopic dermatitis. Slowly then i’ve been developing a lot of ‘eczema spots’, they’re not rashes unlike the typical HIV symptoms i’ve seen on google but it’s quite scaring knowing that i’ve never had eczema in my entire life and i suddenly have it. The eczema i have occurs like any other eczema patient i suppose, with the itch-scratch-bleed cycle, and of course scars will form. I have all these scars all over my body, my legs, underarms, back especially and well my butt. Basically my main concern is, why am i having a random eczema attack? I’ve read on google and a few scientific papers that eczema/atopic dermatitis is a COMMON symptom and i’m very worried. However, i got the courage to go see my GP in the UK and did a blood test and results came out negative. But i am still very worried because of this eczema. I am 99% sure i’m not allergic to any foods or detergents because i’ve been using the same products and i eat pretty healthy foods so i really doubt i’m allergic to anything at all. Could someone please explain to me the relationship between eczema and HIV, because from what i understand, eczema usually occurs when you have an overactive immune system, whereas HIV is a virus that weakens your immune system, so i can’t seem to put these two together. Would really appreciate if any doctor could help me with my query, thank you.