My period or?

Hi ladies! So I’m having a bit of a dilemma. I’ve had an IUD since January and for the most part my periods have gotten progressively lighter, but not necessarily shorter. For the most part, my periods have just been spotting. Sometimes I would need a liner and sometimes I wouldn’t need anything. However, the spotting would typically last between 6 days-2 weeks. I would have cramps and acne and such during this time as well.

I had sex for the first time since having my insertion about two weeks ago. We used condoms and spermicide as well for extra protection, but he didn’t pull out, which was fine with me. The condom didn’t break, we checked to make sure it was fine before and after use.

My period was supposed to start 7 days ago. However, I did have some spotting a few days after having sex, but before my period was supposed to start. The spotting was enough for a liner and only lasted maybe 4 days. I had acne and cramps too.

However, I’m not sure if that was my period or something else? I’m nervous that even with all the different forms of protection, I could be pregnant. I haven’t felt any different since having sex, but I don’t know if I would feel anything after just two weeks anyway. I know the only sure way is to test, but I don’t have the time or money to get a test yet since my car is being worked on and I don’t get paid until Friday.

I just wanted to know what you all thought. I’ve heard of implantation bleeding, but I started spotting very lightly the day after having sex, so I don’t know if it would happen that soon or at all. I’ve also heard that some people just spot a little after sex, but that’s never happened to me before and it wouldn’t explain the usual period acne I get.

I also read that having sex could lighten and shorten your period, but I’m not sure if that could be it since I started spotting the day after sex.

I could use some reassurance or something! Thank you ladies!