It really depends on how you combine the elements and what twists you give the story. Your description is quite vague. Is there more to your plot than being a love triangle where the MC gets pregnant and doesn’t know who the father is? I’m assuming it’s romance/drama?
I’ve actually been working on something kinda new (it’s already on another platform, I’m epy-converting it), which contains a few “cliche” elements, yet I feel like I’ve put my own spin on those elements and I actually really like my plot. So just because your story has a lot of “cliche” elements, doesn’t necessarily mean that it can’t have some originality.