Gender Help!

[Lucysheep]

I know this is digusting but I need help asap! I bought Milo 2 weeks ago and really fat around his belly. I am really worried after watching him hump my other guineapig I am worried he is a she and is a girl! please help can anyone tell from these photos if he is a boy! Thanks

 

[madguinealady]

Looks like a boy to me

 

[Lucysheep]

Oh that's brilliant! Really scared haha! Thankyou so much!

 

[Beans&Toast]

Yeah I thought it was a boy too.. but if you're not sure get a vet to double check