Chances of pregnancy?

[sunshine08878]

Hello Everyone! :)
Ok so I have a situation I want to share and see what advice/thoughts I can receive from those who may be more knowledgable than myself. I'm trying to figure out  the chances/possibility of us being pregnant! This is our situation.
I am on Loestrin24 birth control pills. I take my pills everyday and don't miss any. On the 8th day of my pills (this past Sunday), we had sex. We're not exactly trying to have a baby right now, but it wouldnt be the end of the world if it happened because we would love to have a family, but still he hasnt been ejaculating inside. It got very heated and as he pulled out, he ejaculated. I felt around and didnt feel any drops or anything on myself in that area and I couldnt see it if there was anything in my vagina. I'm not sure that anything got inside but I had also taken cephelexin (sinus antibiotic) on Friday. I had only taken two antibiotic pills last week- one on Thursday and one Friday morning, since then I have taken none. I understand antibiotics may have an affect on birth control.
So I guess my questions here are:
1- What are my chances of getting pregnant on the 8th day of a 24 day cycle?
2- How much of an affect will those two pills of antibiotics have on my birth control?
Thank you all so much for any advice you may offer! Either turnout is great for us :)

[Carly1306]

Firstly, the 'pull out method' is not effective, and can and does cause pregnancy.
Antibiotics do lower the effectiveness of birth control pills, and you are advised to use condoms for at least 2 weeks when on them. Sperm can live for around 5 days, so it's possible that you can get pregnant around that time. All you can do is wait and see if your next period arrives, if not then take a test with first morning urine.

[LovemyKids86]

i think your fertility days start on the 10th Cycle Day, and birthday control is NOT affective on antibiotics so they recommend a second contraception like a condom for back up.