Pregnancy

Hi, just after a little advice...I came off my pill about a month or so ago due to it not agreeing with me, was figuring out what contraception I should go on next...I’ve been feeling a little queasy for the past few days but put it down to stress and lack of sleep and had a dreadful cold not so long ago, well I went out with my mum last night and we had a few drinks..I’ve took a pregnancy test this morning and IM PREGNANT! I’m over the moon I wasn’t expecting it and it wasn’t planned but We’re really happy! :) but I’m now worried as I did have a bit to drink last night.