a bit scared (bit of a read sorry)

So, my boyfriend and I have been having sex for about 6 months now (we lost our virginities to each other) and we've always used condoms, but lately every once in a while we've used pull out, but we wipe his tip first and he has to finish himself off a bit outside of me (sorry tmi). I've never had a regular period. I once had it for 14 days then skipped 7 months and then got into a routine of skipping there other or two months. It's just scary now because I could be pregnant. I skipped last month and am supposed to get it sometimes this week, but last month was the first skip in about five so it was bound to skip more. My cervical mucus is white btw. And when I'm supposed to get my period but don't I still get the acne, some breast tenderness, mood swings, and some pain (but mainly acne) I got a lot of acne, some pain and some mood swings last month, and I'm starting to break out and had cramps yesterday. With all this do you think I have a high chance of being pregnant? I'm going to take a test next week if my period doesn't come this week. Please for the love of god don't be one of those people to say negative things and that I'm stupid, the worse thing is I got my first pack of birth control pills last month but have to wait for my period WHICH WONT COME. I'm also very stressed....all the time