Could I be pregnant?

Helen • Finley Christopher Wilkinson; my prince💙
I am going to go and buy a few tests today, just cheapies! But I just thought I'd give asking for some advice a go... I've been on the pill for a few months now, after having a big break due, I then switched my pill to a different one half way through my old pill pack (as adviced to by the nurse!!!!!!)... For the past couple of days I've been having really bad mood swings, crying for no reason, I've also had bad sickness in the mornings and I've had EXTREMELY sore breasts that feel almost fuller and heavier and that's not like me! I even had to wear a sports bra to bed yesterday 😩 let me know what you ladies think!