Might be pregnant? Help pls

Hello there, so I am on the pill but I havent been very responsible with it recently, 3 months ago I was in a relationship that was going south, and I stopped having sex so I didnt take it properly, would start a box get half ayy through and stop and this and that, now 3-4 months later, I get into a new relationship, I just finished my period on the 7th and on the 8th took my pill*new box* early in the morning (I will be taking them regularly now since I'm sexually active again ) and later that night i had sex and and he ended up finshishng inside me. Should I be worried or do you think I'm ok ? Pls no hate I understand the mistake here just need some advice having anxiety and got not one to talk foo