When is a pregnancy prank not harsh?

Lu

Ok context - I've been best friends with these girls since I was tiny, I've been with my partner since I was 16, I'm 23 now, we would love a family and are incredibly broody but feel we arent in a stable enough job and home situ quite yet.

I'm starting a YouTube channel, I've bought all the equipment, I'm ready to go. I want to prank my two best friends, I really want to tell them I'm pregnant, but it's not his. The prank is more of a prank on the 'it's not his' side.

Now I just want to see how my girls react, just for fun. But, I'm so aware of how offensive pregnancy pranks are, I'm so so aware, and my heart genuinely feels for those with fertility problems, and those who have suffered miscarriages.

Would this prank be too harsh?

(As for acting, I'm a theatre graduate so I wouldn't come across as fake)