Hi @SunshineCake1, I saw your comment on the other post (young boy age 9 with post viral fatigue). I just wanted to pop by and say hi and maybe share my experience, offer some support.
Firstly though, just reading through your posts - GF can cause your spleen to become enlarged/rupture. If your abdominal pain is in the left part of your abdomen behind your lower ribs maybe get it checked out. You might even feel referred pain into your left shoulder and feel breathless if your spleen is acting up.
I think the key thing in the immediate aftermath of being diagnosed with GF is to rest. Complete rest. GF can progress to ME/CFS and you don't need that in your life. So don't 'push through'. I was bed bound for 6 weeks, completely. After that I could only walk with help. Then after about 4 months I could manage by myself if I took things very easy and started to see progress in my recovery.
I found that in order to protect my mental health and my physical health I had to take control. I mean, really take control of my recovery. I'm not in the UK but if the NHS is like the HSE, then they can't guide you and neither can your GP. It's such an unknown illness. You can take control by accepting that you are ill [for now]. And you can take control by giving yourself permission to rest, and setting a limit on how much activity you engage in (sitting up reading MumsNet counts as an activity!). Maybe that's 20mins a day, maybe it's 1 hour - only you know the volume of activity that is within your energy reserve or causes you to crash. You need to limit the crashes though, because each time you crash your nervous system is switched on and it goes into 'danger mode' for want of a better description. The more often the switch is flicked on, the more difficult it can become to switch it off again (ultra basic description there of what's happening to your nervous system!).
When I had enough energy to be 'active' again (sit up for a couple hours, make tea throughout the day and watch some tv) then I started making a recovery plan. I educated myself as much as I could on this illness and worked out my baseline. It's important to identify your baseline because once you understand your baseline, you can start to incorporate some activity and how it needs to be balanced with recovery - maybe you start doing some light stretching for 3mins a day; maybe you prioritise your mental health by listening to a mindful podcast each day for 5mins; maybe you get up and sit in the living room for 15mins. Maybe that progresses to going for a swim (I really mean float!) or a 5min walk or 20mins sitting in the garden. Maybe you can do more than that, only you can know though, so listen to your body.
I found vitamins (I was never a believer previously) to be hugely helpful - CoQ10, B6, B12, Magnesium, Ashwaghanda. I take these every day. I used to take a sugar called D-Ribose but I find it hard to get now. For gut health I take Super8s and eat fermented foods. I also use CBD for the pain and for sleep at night (it doesn't make you high and CBD with mint is probably the easiest to stomach!) and I use a CBD rub for my muscles. I think heat helps as does a snack before bed.
I understand your frustration with not being able to run - I was a five mornings a week cross-fitter who loved olympic weightlifting! Needless to say I'm not back at it yet but I will get there and so will you. In the meantime time the best advice I can give is to adopt an attitude of slow gentle recovery. Keep your chin up.