pregnant?

never thought i'd post one of these, but i had sex in a car tonight & my boyfriend was behind me towards the end & when he went to cum, he was trying to do 2 things at once (open the car door to cum outside & hold in his cum) i didn't feel him cum inside of me, but he said he doesn't know if he did or not, but i felt cum running down my leg. i'm freaking out & i don't have $60 to buy plan b. 
part 2: 
the reason he was going to do it outside was so it didn't get anywhere but clearly it backfired. i understand that $60 is less than having a baby, but the problem is that i don't have $60. so that's why i came here, to ask for advice on a second option, if there are any.