Sex with my SO

I've had sex with my SO every night this week. And he's a lot bigger than what I've been used to. I get really sore and swollen afterward and the first time we had sex I bled like I was losing my virginity. I feel like the condoms he uses are rubbing me raw and causing me more pain than normal. This is the only thing I can possibly think of that's causing me so much discomfort. I'm not really fond of lube so any other suggestions would be great.