Trouble having orgasms postpartum

This is a little embarrassing to me. I am three months postpartum and have had a hard time having an orgasm since the baby was born. I've never struggled with this before. It takes forever to have one. By the time it comes, everything feels so sensitive (not in a nice way) from trying so long. Last night we had sex and I didn't have one. My husband always gives me one by hand if I don't have one during sex but I didn't ask him to because I knew it would just take forever. I have a desire to have sex but the sexual feelings to orgasm are just not there at all! I am breastfeeding and we always use lube. I don't know what is wrong with me, but I don't like it. Am I alone in this?