I haven't slept with anyone until now since I had my daughter...?

...and she is almost two. So, it didn't work out with me and her dad and I'm finally with someone I really care about...problem is....I can't climax! Before my daughter I could get there on a regular basis. Now, even though it feels really good, I can't hit the punchline! What's going on and does anyone have any advice, wisdom, insight, etc?