Actually icing your vagina is probably too much, but a cool internal compress can help with swelling and pain.
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As for the aftermath, get a small! That was a big mistake.
The partner on the receiving end of the stimulation lies back on the bed while their partner does all the work.
There was no way his dick was fitting in me.
It got to the point where I couldn't open my mouth wide enough to get his dick out, so I had to pry my mouth open with my fingers.