Anxiety or Reason for Concern: Unexplained Symptoms and Blood Results

Hi, I am a 19F who has been experiencing strange symptoms over the last two years and want to know if I have reason for concern. I have a lot of cancer and health issues on all sides of the family, but also contracted mono in May which makes diagnosis a little harder. I will recount my symptoms pre and post mono, as well as some of my blood work results and would LOVE an objective opinion if I should pursue further help. I’m just really sick of feeling like I’m working 3x as hard to barely function.
PRE-MONO (a year)
-extreme fatigue and brain fog (sleeping 12-14 hours)
-developed super easy bruising (I used to not bruise like at all!)
-started bleeding really heavily (mono finger prick literally started pouring down my arm/nose piercing pour blooded for over an hour, has never been an issue before)
-got sick/infection SO SO much, like literally every month
-random but consistent pain in legs/arm (almost like growing pain severe aching but havent grown in 8 years. It literally feels like inside my bone hurts, sometimes intensely for minutes, sometimes for hours)
-went from 145-123 rapidly with zero weight loss intent (actually quit playing a varsity sport and was eating worse than ever when the weight loss happened)
-occasional swollen, painful lymphnodes
-weird tiny blood dot rash on bottoms of thighs 2x
POST MONO (the last 5 months)
-obviously, extreme fatigue
-night sweats
-more unintentional weight loss (123-109 in a month, plus a recent diagnosis of potential pcos makes this even more abnormal)
-constant swollen lymphnodes
-reoccurring bouts of fever (like a constant 99-100 for 48 hours) nearly weekly
-one case of weird rash on bottom of thighs
-was hospitalized thinking i had a kidney infection from a UTI (severe body pain, lower right back pain, and fever) but it turns out I had never had the uti to begin with?? Still unexplained
BLOOD WORK:
ER (7/14):
Hematocrit:
33.3 % (low)
MCHC:
35.4 g/dL (high)
MVP:
6.8 fL (low)
Absolute Lymphocytes:
3.6 K/CUMM (high)
*low sodium as well

Check up (08/09):
WBC:
13.23 x10^3/mcL
MVP:
8.7 fL (low)
Absolute Lymphocytes:
3.43 x10^3/mcL (high)
Absolute Neutrophils:
8.63 x10^3/mcL
*sodium still low

MD ordered follow up to check WBC (10/1):
Lymphocytes:
39.5%
Neutrophil:
53.6%

I’m just sick of not feeling like myself, and the bone pain, bruising/bleeding, and weight loss have me concerned there might be another issue at play. I been nervous about my health for the last year, but obviously have no professional medical knowledge. I just need someone qualified to either confirm there might be something remiss or say “youre fine, calm tf down.” I welcome brutal honesty for either answer. Please let me know any additional information needed.Thank you so much!