Finish inside!?😰

Elizabeth
Girls! Please help! I'm sorry it is a little bit tmi, but I need advice from someone whose experienced and isn't my mother! I've been dating my boyfriend for 5 years and we've always used condoms. I started on birth control on May 28th and I've already had my period for June while on the pill. We have been doing pull out lately, and we are going on our first vacation together Wednesday-Friday just us and was just wondering, is it safe to let him finish inside me? I take my pills exactly the way I'm supposed to and my best friend said I should be alright if I take my pills right. Should I add a spermicide to the mix? I want to but I'm nervous! Anything helps!!