9dpo milk supply drop

I’m currently ttc baby #2 and I’ve noticed my milk supply is almost gone 😅 I use to make at least 4 ounces for 20 mins every pump and now I’m lucky if I get 2 every 30 mins… my little guy is almost 10 months and I already went through a decrease in supply when my period started ( use to make 8 ounces in 20 now make 4 in 20) but I’ve never been this low on milk before could I possibly be pregnant? Or anyone experience this before? I’ve been cramping since I wasn’t to say 7dpo and thought maybe my period was coming early but I haven’t gotten anything yet