Input please!

My fiancé and I are long distance right now, but I did visit him about a month ago and of course we made up for lost time (if you catch my drift). We didn’t use protection and he did finish inside me (may be TMI but it’s important info). I’m currently on the pill and have been for almost 2 years. I don’t skip the placebo week either, so I’m used to having my period every month. My period was supposed to come between last Wednesday and this Wednesday. It hasn’t. I’ve had some spotting, but definitely not a period. I’m supposed to start a new pack of birth control tomorrow. Do any of you ladies think there could be a chance that I could be pregnant? Should I test this week or maybe wait to see if I get my period next month? Any input is appreciated. 😊