Anyone feel they are bad at sex?

My husband was a virgin at 30 when we got married. I was not but had obstained for a while. It was tough at the beginning. Then I thought we were getting the hang of it but now we are back to it not working. It's like we can't get it to "fit". I feel embarrassed asking the question and a lot if times it finally works, it's painful for me and I don't orgasm. I feel like I suck at sex anymore. Anyone else ever have this problem?