I honestly am losing my mind

I found out I was pregnant at the beginning of February, it was a complete shock my fiancé doesn’t have a high chance of having kids due to past medical issues and I never thought I was able, we were both very excited because obviously this told us we would be parents. The problem is we are not in ANY position to raise a baby. I was fired from my job on the 1st, we live separately because we can’t afford an apartment in our town and my car continues to break down and have issues that I struggle to pay for. My S/O is legally disabled and so I spend a lot of time taking him to and from doctors appointments some over an hour away... I have a scheduled abortion tomorrow morning and I’m heartbroken, and scared and so so stressed. We have no time to care for a child, I’m not in a mental space to care for a child when I can barely take care of myself, no one but him knows I’m pregnant so I’m completely alone (his help only goes so far he’s upset too) we had to take money out of his surgery savings to pay for this and I feel horrible.... any words would be helpful and comforting, i really don’t care about hate comments I have thick skin call me selfish, killer, whatever you want I don’t care

I should note he (my SO) has no anger or resentment towards me, we both agreed to this and talked long and hard about it even before it happened, he has no problem using some of the money and wants to go with me it’s me who’s overthinking and everything.