Scifi movie where an alien has a baby on a bus

Question

Trying to help a friend find an old sci-fi movie. Any assistance would be greatly appreciated as we've searched for hours and come up with nothing.

I need help guys. There is this absolutely horrible sci-fi movie I saw as a child and i can't for the life of me remember what it was called. All I can remember is at one point near the end, there was a bus load of aliens and one of them was pregnant and in labor and she gave birth in the back of the bus, which caused the other aliens to flee the bus and it caused a nasty wave of goo and amniotic fluid to come pouring/flooding out of the bus

It's super gross and that's why I remember that part so vividly. But it was a group of aliens that all looked different and they were trying to escape something. They were on earth in the country somewhere.

It was an 70s/80s movie. I remember turning it on in the middle and then my mom walked in during the birthing scene and freaked out wondering what i was watching and she made me turn it off. This has been haunting me since childhood ^ It's a B or maybe even a C Rated Sci-fi movie. I think the aliens were hiding on a farm or something and there were humans trying to get them back to some ship before the other humans came to kill them. It was SUPER weird, so of course I was TOTALLY INTO IT, but mom had to ruin my shine.

Answer 1

The OP posted this comment:

It turned out to be Basket Case 3. Thanks for your suggestion though!

I think this is the relevant scene (from Wikipedia synopsis):

With Hal incapacitated Belial is drugged to calm him down and the birth of his and Eve's twelve children is overseen by Little Hal, Hal and Granny Ruth's multi-armed and blob-like prodigy son.

And, by the way, your mother was right to stop you from watching it. Judging by the synopsis very shortly after this scene; it is not suitable for children.

Answer 2

If you turn the bus into a station wagon, this is exactly one of the scenes from Men In Black (1997, Tommy Lee Jones as Agent J, Will Smith as Agent K, Rip Torn as Agent Zed; also Vince D'Onofrio as Edgar/The Bug) -- new agent K gets roped into delivering (well, catching) a baby from an octopoid mother, while the family is illegally fleeing New York; during this, J is questioning the father, finding out that the word is out that something terrible is coming.