sex/unprotected/birth control

Me

So my boyfriend and I got experimental last night. I wanted to try letting him finish inside of me because I’ve heard good things about it. We’ve been together for almost 4 years so pregnancy wouldn’t be a huge damper (for me at least..). I bought some spermicide at Walmart and inserted it as directed. We had sex and he finished inside of me. It was great and felt so intimate. I take the birth control pill within the same time frame every day (of course today’s the day I forget to take it with me and I’m not home to take it). Has anyone else done this? I’m more concerned about the combination and effectiveness.