can you get pregnant from pre cum?

First of all money issues shouldn't be a concern for you. There are family planning clinics everywhere and at 16 years old it is free. Secondly I would like to say that having unprotected sex is a very immature thing to do. And with anal sex it is easier to contract stds because of the more likely there is to be blood. And to answer your question yes you can get pregnant from pre-cum and you can also get diseases that way.

I was looking for help not someone who tells me "oh your immature for not using a condom" I dont have the resources to get condoms

When you ask a question about sex and no protection, you will sometimes get a strong reaction, maybe to strong sleepingbeauty77.
Heres the thing. Anytime you have unprotected sex, there is always that chance of pregnancy, which i am sure you know.
The chances of getting pregnant buy pre cum is very slim, almost zero.
If bf had an orgasm and you two had intercourse again without any break (bathroom and cleanup) you can get pregnant with his pre cum. This is because there is still live sperm left behind which will make its way out in pre cum.
If bf ejaculates while having anal (inside you) you can also become pregnant. You have to be careful that the ejaculate doesn't run into your vagina.
Birth control will help your periods become regular as well. A month is not that far away. Wouldn't it be a better idea to wait it out until your bc kicks in? Try to avoid taking chances. The use of a condom is two fold. One is to prevent an unwanted pregnancy and secondly to not contract a nasty STD. Some STD's can be brutal and life threatening and remember, if you contract the herpes virus, this will stay with you forever.
I hope i helped a bit and i would never call you immature, just inexperienced.