Early pregnancy symptoms

Sam • 🇬🇧 UK Full Time Mum, 2YO girl, pregnant with 2nd
I'm on day 18 of my cycle & I feel like I could be pregnant.
I've been irrationally emotional and had heavy discharge and we have been using the 'withdraw' method this month which obviously isn't too safe.
We were planning on trying to get pregnant next month anyway so it wouldn't be too much of a shock.
I was just wondering if anyone else has had such early symptoms?
Thanks