Alcohol tolerance is shrinking

I am normally 5-6 drinks to black out seems now I can’t handle more than 3 drinks I drink past it keep blacking out. I had two and half drinks but blacked out according to my phone I didn’t mean trouble I left the house went to a bar worried the bartender she contacted my boyfriend on my phone and let him know she was sending me home. I was completely blacked out can’t remember even going. I woke up on the couch missing my phone and woke up my grandpa searching for it he found my cellphone on the side walk I had everything else but it also looks like I went to a store to buy food then passed out. I’m lucky but I feel stupid. I’m bewildered confused and mad at myself like why was I this far gone and so stupid? This all was just stupid. I had jewelry and makeup on but don’t remember nothing I just know one moment I was just chilling at home. I’m scared to look at my bank account. I want my Driver’s license back but I don’t trust myself at all so I don’t try at all because I can’t even trust myself. I have a lot of work to do and I’m happy right now I don’t have my driver’s license and avoid driving . I would cause harm in the fact that I black out and don’t know what doing.