This is exactly how I felt at your stage (aimless, unmoored, finding myself, existential questioning, craving a huge life event to throw everything in the air - I recognise this absolutely). You don’t sound, however, as though your right-thinking brain is as deafened by the hormonal ruckus as mine was. You have a degree of self-awareness that I had before and after, but which totally vanished during “the madness” (as DH and I refer to the 5-year period where I was overtaken by chemicals).
How I felt and do feel about giving into those urges had changed over time. Initially, I was deeply resentful. I felt as though I’d been held hostage by an invisible hand forcing these hormones into my body and berated myself for not fighting them off. I resented the lack of control. My pregnancies were difficult, the second one life-changingly so. Other choices I’d made also led to babies wreaking untold havoc on my career and earning prospects. Further, it turns out I don’t much like babies or toddlers (including my own) and I have the patience and tolerance of a 3 year old child myself.
Now that those years are far behind me, my feelings have changed. I accept my body for all the things it has done to and for me. It’s the only one I have, it is what it is. No point hating it or resenting it. Moreover, the violent physical brutality (as it was for me) of procreating has made me a softer, more compassionate and understanding person. I’m amazed I’m still going - and so many women have it so much worse than me. I feel I’ve learned a lot.
As for life with children: all the cliches apply to me. Life in black and white, hardest thing but most rewarding thing blah blah. BUT, I think that if I hadn’t succumbed or if I’d not been able to have children, I would have found my way. There are a couple of life paths I yearn for, which are entirely incompatible with motherhood. Was it worth it and do I regret lost opportunities? Ask me on my deathbed, life has an unending capacity to shock and surprise!
Good luck with your decision. I’m placing a sort of maternal (ha!) virtual arm around your shoulder (selfishly, as my own younger shoulder). Keep stable and have faith in yourself. These can be stormy years, but calm does follow.