No, but that's the simple answer.
If you asked me had I ever resented the fact that being a mother has undoubtedly held me back in many respects, the answer would be a resounding yes.
However, I am able to recognise that most of those things that being a mother has held me back from are things that I wouldn't even be aware I wanted unless I'd had children - they showed me a different world full of opportunities and revealed aspects to my character I didn't know I possessed. Had I known this before TTC, I might have decided not to TTC. But that's not quite the same thing.
I can also recognise that it's not so much being a mother that has restricted me, it's being a single parent with no family and an uninterested ex. Therefore, I have never felt resentment towards my children, only my X and wider society, although even that has now passed since I am at a stage where my DC are older and so those restraints no longer apply.
I don't regret anything in my life because it's all contributed to who I am now and the life I currently lead. And I am happy. It's been a bumpy road and one I might tackle differently if I had my time again, but I don't regret anything. Regret is a waste of time. All anyone can do is learn from experiences and try to bend the future to their will.
A big part of life is spin. Instead of thinking on what you've missed out on, concentrate on the fact that you will be still be comparatively young when your children are old enough for you to reclaim independence. You can then pursue your own goals much more aggressively.
Good luck. I think what you're feeling is something that most mothers go through at some point. It's that feeling where you realise that your sense of identity has been subsumed by being a mother and that you're not really sure who you are any more, let alone where you're going. It passes. It passes a lot more easily if you are able to find something to latch on to that's all about you and no one else.