When it's ur moms birthday and can't buy shit

I'm embarrassed to go see my mom for her bday cuz I can't afford to buy her anything nice rn especially after I payed my bills, she said she doesntwant clothes or to be taken out to eat, Idk what to get her and flowers well she's just going to have to throw them away later and I'm annoyed because my siblings keep texting me asking well did you at least buy her something and it's getting me so irritated idk what to do oh and she turns 50 today :(