On Touched function problem?

So heres my script:

MainScript:

local sp = script.Parent.Parent
local blood1 = sp:WaitForChild("Blood1")
local blood2 = sp:WaitForChild("Blood2")
local blood3 = sp:WaitForChild("Blood3")

script.Parent.Touched:connect(function (hit)
game.Workspace.Autopsy:Play()
blood1.Transparency = 0.4
script.Parent.Secondary.Disabled = false
script.Parent.MainScript.Disabled = true
end)

Secondary:

local sp = script.Parent.Parent
local blood1 = sp:WaitForChild("Blood1")
local blood2 = sp:WaitForChild("Blood2")
local blood3 = sp:WaitForChild("Blood3")

if blood1.Transparency == 0.4 then
wait(0.5)
blood2.Transparency = 0.4
wait(0.5)
blood3.Transparency = 0.4
wait(8)
blood1.Transparency = 1
blood2.Transparency = 1
blood3.Transparency = 1
game.Workspace.Autopsy:Stop()
end

The problem: Whenever I enter my game the mainscript runs without me touching the brick that triggers it. And the secondary script won't work for some reason... Help me please?

try this in your main script

local sp = script.Parent.Parent
local blood1 = sp:WaitForChild("Blood1")
local blood2 = sp:WaitForChild("Blood2")
local blood3 = sp:WaitForChild("Blood3")

function  OnTouch(part)
game.Workspace.Autopsy:Play()
blood1.Transparency = 0.4
script.Parent.Secondary.Disabled = false
script.Parent.MainScript.Disabled = true
end
script.Parent.Touched:connect(OnTouch)