Feeling sad 😞

Nicola • I`m a 32 year old teacher from the UK. Had my rainbow baby in September 2017 after miscarrying twice. Had a chemical pregnancy in January and now TTC #2
Tomorrow is my birthday and I have a 3month old boy. I really don't want much at all so I suggested to my boyfriend that I'd like two pretty lamps for our bedroom. I have ordered and paid for them myself (which I really don't mind) as my boyfriend gets paid on the 15th of each month, so will then transfer me the money. Earlier, I was joking around with him and mentioned that I couldn't wait to get a birthday card from our son, and that I wondered how good his writing would be. The look on my boyfriend's face indicated that he hadn't got me a card from our son and then he told me that he'd forgotten 😞I felt really sad. Am I being ridiculous or am I right to feel upset? I haven't asked for much at all, but this is my first birthday as a Mummy 💔