Still deciding to breastfeed or not

Hi! I'm 18 and baby is due in 5 weeks. I'm still not sure if I want to breastfeed or not! I get really bad eczema on my nipples especially when irritated, so is there anything I can do for that? Do nipple shields help that and  would pumping irritate them? I don't think I have time anymore to sign up for classes as they're all full. Any tips or suggestions?