Someone please PLEASE help me!!

Vandielou
I am about to lose my mind. I'm 21 and I am married and my husband is 22. Before I was married I had a boyfriend on and off to two years and I never once had an orgasm. When I started dating my husband I discovered I could only occasionally orgasm during penetration and most of the time that's if I also used a vibrator in conjunction. I've always been embarrassed because my husband will always have to go down on me otherwise I have a very hard time finishing. He always say he never minds it but sometimes it can take a while. I get so easily distracted. Like from the tv. (I always try to mute it) or just straight up from my mind wondering. Lately I haven't been able to finish. The last three times we have had sex all I can think about is how I want to finish with him inside me. And I let that just take over my thoughts and it is preventing me from focusing. My husband just tells me don't think about it but is not that easy. There is nothing wrong with him he is doing all the right things. I just want to share that feeling with him and when I can't I get frustrated and end up not finishing and then I get even more frustrated. Has anyone ever been through this?! Is there light at the end of the tunnel?? Is there something I can try or change? Sadly since my husband suffered from a stroke he doesn't have the longevity he used to. And he doesn't last long enough for me to get there. And it is seriously getting to me.