I had a sip of natural red wine and next day a sharp pain in my stomach! I'm so scared!

I will be 5 weeks tomorrow. And my best friend brought a dark wine from Chile only made from grapes. I asked her how does it have alcohol in it? She says I don't know but they said and on the label says just made out of fruit and she was excited and wanted me to try some. I don't want her or anyone to know I am pregnant yet I want to surprise them after my 8 week confirmation (I had a miscarriage once before my confirmation and had told people so this time I am waiting a little longer). So she poured me a small glass and I said very little for me my stomach hurts. So I tried some and took a small sip, it did just taste like grapes couldn't even taste the alcohol to be honest. I didn't drink more than that just one sip. I got so scared when I got home and started looking online if it's harmful to the baby. Then this morning I got one sharp pain on the side of my stomach when I tried to push out a fart (sorry tmi) but I went straight to the bathroom after to see if they was any blood. Do you think I will miscarry now that I had that sip of wine? I am so scared. Anyone experience the same?