Can frequent masterbation cause infections?

I have had infection after infection in my downstairs area and I’m wondering if maybe touching myself may be the cause. I have a very high sex drive and I masterbate more than I would like. I don’t have a partner so I don’t have any other choice really. However, I never actually put anything into my vagina, I only touch the outside part. So what I’m wondering is if this is causing this burning and hurting of my vagina. This may be a stupid question but I genuinely don’t know. Has anyone else had this issue?