Anxiety in relationships

You know I thought i was doing well, since being in this new relationship I feel my anxiety problem had went away
,Well not completely away because I have had a few minor ones, but I think all it's done is shifted into relationship anxiety.
I've never been with someone and felt this nausea I get when I overthink things and I bloody hate it ..I will be the one to drive him away!  Is what I keep saying to myself , trying to pin point the reason for feeling this way, I'm not sure.
Maybe it could be that I'm now coming up for 31 and no where near where I was wanting to be in life , married and with kids ...Maybe I'm just scared of being in a relationship again because to be honest I'm scared of possibly loosing many years of my life  again and still might be no where near close to being a wife and mother, it's scary it really is then I think about other things ...Does he like me as much as I like him  , will he leave me, does he even like the things I like  everything with us is perfect except I have to deal with all this in my head and I wanna tear my hair out!

Like lightening!

"Every moment leading up to the one in which you meet your future husband or wife somehow shapes you into the person you were meant to be with. any heartbreaks or loneliness you've had along the way can be important -- sometimes we need to know what something feels like when its wrong before we can really know when it feels right"

I still stand by my words, dispite saying this on a post a year or so ago I still do believe that your journey in life does shape and mould you into the person that you become ..And you just learn from your mistakes, at my age most people have probably went through a long relationship, heartache ,  broken off engagements,moved back into your parents..Hello..I'm living proof.
I am however so much more happier  and in love than ever before, he came into my life out of nowhere..Like lightning!

Me and my friend have went  through so much heartache it's great to see us both happy in our relationships of course I've only just started seeing Chris but ..Hayley and kevin are exceptionally amazing,I do tend to tear up quite a lot  when I talk or think about them two, okay so her engagement didn't work out with the other guy , as didnt mine...Least we realised before getting married but let's not dwell on the past too much.
Around November last year my Hayley took a chance on a guy she worked with, and asked him out..Best decision ever!
Took her a while but understandable , you think you shouldn't date someone who your friends with ..But what if you can have that best friend and your soulmate wrapped up into one amazing Kevin!
I've never see her so happy and in love as is Kevin , a perfect match for each other oh yeah.. and they're getting married
Ekk!