Opinions/Advice (TMI WARNING) ⚠️

I want a baby.. like REALLY BAD have baby fever. But I’m 19, i honestly don’t NEED to have a child at the moment. So I’m semi-okay with waiting. My boyfriend (3yrs) defiantly does not want one right now. In the future yes, but not at the moment. I was on depo and should have gotten my second shot around Halloween, but couldn’t. They kept having to push back my appointment. Now I’m supposed to go on the 9th of January. I was told “don’t have sex” until then (they always tell me that I hate it I’m a nymphomaniac I can’t just NOT have sex.) I haven’t had a period since September. I’m usually irregular but almost always have one I’m not sure why I’m not getting one. Anyways we’ve been using vaginal contraceptive film since the 14th of December but i don’t always use it right we have sex about once a day and about half the time he cums inside. But before that he stopped cumming inside on the 17th of November and was just pulling out. I took 3 pregnancy tests in November all were negative and had one at the doctors on the 14th of December and it was negative as well. Before we were together though I would prefer internal ejaculation with other partners and never got pregnant. So my questions are:

I know there is at least a chance I’m pregnant, but how do I know how my chances are in general? Because I know I have reproductive issues and I’m not sure it’s possible for me in general and that terrifies me. I want to experience having a child. And I can only do it once.

Should I take a pregnancy test before the 9th or just wait and see?

Should I say anything about it to my boyfriend beforehand? (He knows I want a baby and he knows I haven’t had a period but he doesn’t know i don’t always use the vcf the right way -it takes too long-)