If you're relationship has too many bad memories, would you still stay?

I went through something traumatic & I didn't realize the past 5 years has been really bad. I can't stop thinking of the past. Him & I were really verbally abusive to each other. It hurts & I feel like I cant get past it. His mom is also bringing up everything. We just had our baby 5 months ago & I think iv gotten bad anxiety n some post partum. I don't know if I should stay or go. We've had really great memories but its the bad that I can't let go