Okay momma's, I need your help!

I'm due in just a little over 8 weeks and I still don't have a car seat! We're running very low on money (fiance lost his job, just got a new one but is only part time/temporary making only about $200-250 a week!).

Any suggestions on where I can find a good, cheap and new car seat?! I looked at Walmart but the cheapest my local Walmart has is $159!

My hospital used to give car seats to those who didn't have one, but for some reason they no longer do.. I'm at a loss and could really use some suggestions!!😭😭

TIA!!