Need advice on abortion..

I just found out I’m pregnant with my fourth child, currently 5 weeks. I’ve never have gotten a abortion but I feel like it’s a choice I might have to do. Me and my husband currently have 3 children the youngest being 18 months, we are so lost on what to do as we don’t have the financial stability to afford another, I would definitely have to stop working and he’s already currently working 2 full time jobs, so once I give birth I’m on my own with 4 kids, I do have my family to support me but obviously not to take off the burden of income. Any advice is greatly appreciated