Spider veins and varicose veins

Hi, I would like some advice on what I can take for spider veins and what I think is the beginning of varicose veins. I have lots of spider veins all over my thighs and some on the backs of my calfs, I have also noticed that some of my larger veins are becoming more visible and one in particular is starting to look a lot darker, I also have one or two that are becoming slightly raised.
I have the occasional 'twangs' in my legs (upper and lower) and what can only be described as a feeling of the fat inside of my legs wobbling around? Or like a vibrating feeling. Very hard to explain. Not sure what other things I need to put here, there is one thing that I'm not sure is related - I have recently started getting a pain in my knee (the last 3 weeks) whenever I stretch my leg out my left knee hurts and if I move my leg up and down it will click after a little while and when I'm standing if I put my weight on the left side that knee will hurt so have to stand on the right side. As I said not sure if this is related as this has only just started happening and the vein issue is something that has been going on for a while. I also sometimes have pain in the left side of my hip when I have been walking for a little while. If there is anything else you need to know please tell me and I will add it. Thankyou