Odds of already being pregnant with baby #2?

I had a baby 3 months ago. We have not really been using birth control, just pulling out. I know the pull out method is not exactly recommended because it's pretty unreliable. It's all up to your partner to time things exactly right every time and they have to make sure they don't get any "stuff" near your crotch. And if they go right back in, there could still be some "swimmers" that make their way inside you. Same with if they go in with prec*m or start to have prec*m inside you - there can be sperm in that too.

So I get that using just the pull out method is not ideal or very smart. I also know you can get pregnant postpartum even if you haven't had your period return because ovulation can start before your period comes back sometimes.

I had my period in early December. It was my first postpartum period and pretty routine. I've been having sex without issue since 4 weeks postpartum. There have been a couple times where I'm pretty sure some c*m got into my vagina and my partner usually only pulls out just to avoid fully c*mming inside me and still c*ms on my external genital area. He will usually wipe off his penis before going back in though. I know that doesn't exactly "help" though.

What would be the odds of me being pregnant again already? My period never really was super regular before I got pregnant. It was never a clockwork 28-day cycle. Last night I felt a little nauseous like I could throw up and I had the same feeling again this morning. I never actually threw up but it felt all gross and queasy. Feeling like I could throw up was one of the first signs I was pregnant before as was really sore boobs and stuff. My boobs aren't hurting right now. I also have had a lot more discharge (nothing that smells or looks weird, just more white or clear discharge that is sometimes stretchy). I should get my period sometime earlier on in January if it comes (I usually don't skip periods though).

Updates
1 y
Well, so far, my period has not came and I am on day 30 of my cycle. Usually my period would come between 30-35. Usually between 32-34. It was a little irregular though. But I have no indication of it coming. I know December was my first period since having my baby but I don't know. I may be pregnant.
Odds of already being pregnant with baby #2?
Post Opinion