Forrest Jr theory

So this theory is recirculating and I never thought twice about it because in my mind Forrest jr is Forrest Gumps blood.

But now people are saying when Jenny showed up she was sleepy because she was already preggo. Then also they’re saying Jenny and Forrest might not have hooked up because it didn’t happen on camera. It was just implied.

But people like me who think that Forrest jr is definitely a blood gump believe the director made it clear that that was his son.

What do you think?