swollen vagina??!!?!

Nyâh
just got into a new relationship with a guy thats pretty "lengthy" in certain areas. me, just loosing my virginity on New Years <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">Eve</a>, ig something went wrong and i woke up yesterday anddd "it" was swollen ..
i iced it to make the swelling go down but i just wanna know if anyone else has had this problem and what do i do if it happens again. 
btw - no pain!